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Finding the Third Proportional to 99,920 and 214,051

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Solution

The third proportional to 99,920 and 214,051 is: 458,545.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,920 : 214,051 = 214,051 : x
  2. Step 2: Convert to fraction form
    99,920/214,051 = 214,051/x
  3. Step 3: Cross multiply
    99,920x = 214,051 × 214,051
  4. Step 4: Simplify right side
    99,920x = 45,817,830,601
  5. Step 5: Solve for x
    x = 45,817,830,601/99,920
  6. Step 6: Final answer
    x = 458,545.14

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.