Any process that increases the frequency, rate or extent of metanephric mesenchymal cell migration resulting from the platelet-derived growth factor receptor-beta signaling pathway.
Synonyms:
exact_synonym:
positive regulation of metanephric mesenchymal cell migration by PDGF receptor-beta signaling pathway; positive regulation of metanephric mesenchymal cell migration by PDGFR-beta signaling pathway; positive regulation of metanephric mesenchymal cell migration by betaPDGF receptor signaling pathway; positive regulation of metanephric mesenchymal cell migration by platelet-derived growth factor receptor-beta signalling pathway