Home / 139,325-208,663

Finding the Third Proportional to 139,325 and 208,663

Calculator

Solution

The third proportional to 139,325 and 208,663 is: 312,508.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,325 : 208,663 = 208,663 : x
  2. Step 2: Convert to fraction form
    139,325/208,663 = 208,663/x
  3. Step 3: Cross multiply
    139,325x = 208,663 × 208,663
  4. Step 4: Simplify right side
    139,325x = 43,540,247,569
  5. Step 5: Solve for x
    x = 43,540,247,569/139,325
  6. Step 6: Final answer
    x = 312,508.51

Related Problems

Find third proportional to 69,662.50 and 104,331.50
Half scale
Find third proportional to 278,650 and 417,326
Double scale
Find third proportional to 139,327 and 208,666
Similar ratio
Find third proportional to 208,987.50 and 312,994.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.