Home / 149,216-320,518

Finding the Third Proportional to 149,216 and 320,518

Calculator

Solution

The third proportional to 149,216 and 320,518 is: 688,477.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,216 : 320,518 = 320,518 : x
  2. Step 2: Convert to fraction form
    149,216/320,518 = 320,518/x
  3. Step 3: Cross multiply
    149,216x = 320,518 × 320,518
  4. Step 4: Simplify right side
    149,216x = 102,731,788,324
  5. Step 5: Solve for x
    x = 102,731,788,324/149,216
  6. Step 6: Final answer
    x = 688,477.03

Related Problems

Find third proportional to 74,608 and 160,259
Half scale
Find third proportional to 298,432 and 641,036
Double scale
Find third proportional to 149,218 and 320,522
Similar ratio
Find third proportional to 223,824 and 480,777
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.