After Australia declared on 662-9, England lost their top four for 132 runs before the rain hit the Waca to see the visitors 127 behind.
The Titans rounded off the Ram Slam season in style by crushing the Dolphins by seven wickets at Centurion.
One Australian wicket for 346 runs sums up England’s misery on day three of the third Test in Perth.
Titans coach Mark Boucher believes the Dolphins deserve their spot in the Ram Slam T20 Challenge final at SuperSport Park on Saturday.
Australia wrested back the initiative in the third Test by crushing the England batting and replying with 202-3 on day two.
The Dolphins will meet the Titans in the final of the Ram Slam after their semi-final against the Cobras was washed out.
Dawid Malan scored his maiden Test century in an unbeaten 174-run partnership with Jonny Bairstow which saved England from a dreadful start to the third Test in Perth.
The Cape Cobras need the batsmen to come to the party in their semi-final against the Dolphins in Durban on Thursday.
The Proteas’ four-day Test against Zimbabwe in Port Elizabeth will have extra overs and extended playing time, says the ICC.
Tabraiz Shamsi’s four-for saw the Warriors skittled for 143, before AB de Villiers and Aiden Markram’s half-centuries sent the Titans to the Ram Slam final.