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Finding the Third Proportional to 252,229 and 420,381

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Solution

The third proportional to 252,229 and 420,381 is: 700,633.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,229 : 420,381 = 420,381 : x
  2. Step 2: Convert to fraction form
    252,229/420,381 = 420,381/x
  3. Step 3: Cross multiply
    252,229x = 420,381 × 420,381
  4. Step 4: Simplify right side
    252,229x = 176,720,185,161
  5. Step 5: Solve for x
    x = 176,720,185,161/252,229
  6. Step 6: Final answer
    x = 700,633.89

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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.