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Finding the Third Proportional to 272,466 and 408,790

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Solution

The third proportional to 272,466 and 408,790 is: 613,321.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,466 : 408,790 = 408,790 : x
  2. Step 2: Convert to fraction form
    272,466/408,790 = 408,790/x
  3. Step 3: Cross multiply
    272,466x = 408,790 × 408,790
  4. Step 4: Simplify right side
    272,466x = 167,109,264,100
  5. Step 5: Solve for x
    x = 167,109,264,100/272,466
  6. Step 6: Final answer
    x = 613,321.53

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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.