Home / 129,542-278,767

Finding the Third Proportional to 129,542 and 278,767

Calculator

Solution

The third proportional to 129,542 and 278,767 is: 599,890.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,542 : 278,767 = 278,767 : x
  2. Step 2: Convert to fraction form
    129,542/278,767 = 278,767/x
  3. Step 3: Cross multiply
    129,542x = 278,767 × 278,767
  4. Step 4: Simplify right side
    129,542x = 77,711,040,289
  5. Step 5: Solve for x
    x = 77,711,040,289/129,542
  6. Step 6: Final answer
    x = 599,890.69

Related Problems

Find third proportional to 64,771 and 139,383.50
Half scale
Find third proportional to 259,084 and 557,534
Double scale
Find third proportional to 129,544 and 278,771
Similar ratio
Find third proportional to 194,313 and 418,150.50
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.