Danso's score enabled Portland to finish with a record of 11-14-9 (42 points).
Alvaro Saborio found the net for Real Salt Lake (15-11-8), which heads into the post-season with two consecutive ties.
RSL's loss left the door open for FC Dallas to grab third place in the Western Conference seedings, but Dallas was routed by San Jose 4-2 Saturday.
Justin Bieber crashes Drake Bell's album release party
Putin thinks Obama would save him if he were drowning