#1)# If Solubility product is larger than the ionic product then no precipitate will form on adding more solute because unsaturated solution is formed.
#2)# If Solubility product is smaller than the ionic product then excess solute will precipitate out because of the formation of super saturated solution.
#3)# If Solubility product is equal to the ionic product then saturated solution will form and addition of more solute will further precipitate out.