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Finding the Third Proportional to 187,497 and 290,349

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Solution

The third proportional to 187,497 and 290,349 is: 449,620.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,497 : 290,349 = 290,349 : x
  2. Step 2: Convert to fraction form
    187,497/290,349 = 290,349/x
  3. Step 3: Cross multiply
    187,497x = 290,349 × 290,349
  4. Step 4: Simplify right side
    187,497x = 84,302,541,801
  5. Step 5: Solve for x
    x = 84,302,541,801/187,497
  6. Step 6: Final answer
    x = 449,620.75

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.