Home / 129,089-279,624

Finding the Third Proportional to 129,089 and 279,624

Calculator

Solution

The third proportional to 129,089 and 279,624 is: 605,702.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,089 : 279,624 = 279,624 : x
  2. Step 2: Convert to fraction form
    129,089/279,624 = 279,624/x
  3. Step 3: Cross multiply
    129,089x = 279,624 × 279,624
  4. Step 4: Simplify right side
    129,089x = 78,189,581,376
  5. Step 5: Solve for x
    x = 78,189,581,376/129,089
  6. Step 6: Final answer
    x = 605,702.90

Related Problems

Find third proportional to 64,544.50 and 139,812
Half scale
Find third proportional to 258,178 and 559,248
Double scale
Find third proportional to 129,091 and 279,628
Similar ratio
Find third proportional to 193,633.50 and 419,436
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.