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Finding the Third Proportional to 216,718.88 and 287,641.13

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Solution

The third proportional to 216,718.88 and 287,641.13 is: 381,773.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,718.88 : 287,641.13 = 287,641.13 : x
  2. Step 2: Convert to fraction form
    216,718.88/287,641.13 = 287,641.13/x
  3. Step 3: Cross multiply
    216,718.88x = 287,641.13 × 287,641.13
  4. Step 4: Simplify right side
    216,718.88x = 82,737,416,791.27
  5. Step 5: Solve for x
    x = 82,737,416,791.27/216,718.88
  6. Step 6: Final answer
    x = 381,773.01

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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.