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Finding the Third Proportional to 252,233 and 420,387

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Solution

The third proportional to 252,233 and 420,387 is: 700,642.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,233 : 420,387 = 420,387 : x
  2. Step 2: Convert to fraction form
    252,233/420,387 = 420,387/x
  3. Step 3: Cross multiply
    252,233x = 420,387 × 420,387
  4. Step 4: Simplify right side
    252,233x = 176,725,229,769
  5. Step 5: Solve for x
    x = 176,725,229,769/252,233
  6. Step 6: Final answer
    x = 700,642.78

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.