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Finding the Third Proportional to 216,714 and 287,554

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Solution

The third proportional to 216,714 and 287,554 is: 381,550.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,714 : 287,554 = 287,554 : x
  2. Step 2: Convert to fraction form
    216,714/287,554 = 287,554/x
  3. Step 3: Cross multiply
    216,714x = 287,554 × 287,554
  4. Step 4: Simplify right side
    216,714x = 82,687,302,916
  5. Step 5: Solve for x
    x = 82,687,302,916/216,714
  6. Step 6: Final answer
    x = 381,550.35

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.