Home / 172,416-258,858

Finding the Third Proportional to 172,416 and 258,858

Calculator

Solution

The third proportional to 172,416 and 258,858 is: 388,638.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,416 : 258,858 = 258,858 : x
  2. Step 2: Convert to fraction form
    172,416/258,858 = 258,858/x
  3. Step 3: Cross multiply
    172,416x = 258,858 × 258,858
  4. Step 4: Simplify right side
    172,416x = 67,007,464,164
  5. Step 5: Solve for x
    x = 67,007,464,164/172,416
  6. Step 6: Final answer
    x = 388,638.32

Related Problems

Find third proportional to 86,208 and 129,429
Half scale
Find third proportional to 344,832 and 517,716
Double scale
Find third proportional to 172,418 and 258,861
Similar ratio
Find third proportional to 258,624 and 388,287
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.