Home / 138,908-207,446

Finding the Third Proportional to 138,908 and 207,446

Calculator

Solution

The third proportional to 138,908 and 207,446 is: 309,801.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,908 : 207,446 = 207,446 : x
  2. Step 2: Convert to fraction form
    138,908/207,446 = 207,446/x
  3. Step 3: Cross multiply
    138,908x = 207,446 × 207,446
  4. Step 4: Simplify right side
    138,908x = 43,033,842,916
  5. Step 5: Solve for x
    x = 43,033,842,916/138,908
  6. Step 6: Final answer
    x = 309,801.04

Related Problems

Find third proportional to 69,454 and 103,723
Half scale
Find third proportional to 277,816 and 414,892
Double scale
Find third proportional to 138,910 and 207,449
Similar ratio
Find third proportional to 208,362 and 311,169
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.