Home / 272,330-399,339

Finding the Third Proportional to 272,330 and 399,339

Calculator

Solution

The third proportional to 272,330 and 399,339 is: 585,582.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,330 : 399,339 = 399,339 : x
  2. Step 2: Convert to fraction form
    272,330/399,339 = 399,339/x
  3. Step 3: Cross multiply
    272,330x = 399,339 × 399,339
  4. Step 4: Simplify right side
    272,330x = 159,471,636,921
  5. Step 5: Solve for x
    x = 159,471,636,921/272,330
  6. Step 6: Final answer
    x = 585,582.33

Related Problems

Find third proportional to 136,165 and 199,669.50
Half scale
Find third proportional to 544,660 and 798,678
Double scale
Find third proportional to 272,332 and 399,342
Similar ratio
Find third proportional to 408,495 and 599,008.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.