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Finding the Third Proportional to 102,129 and 218,286

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Solution

The third proportional to 102,129 and 218,286 is: 466,554.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,129 : 218,286 = 218,286 : x
  2. Step 2: Convert to fraction form
    102,129/218,286 = 218,286/x
  3. Step 3: Cross multiply
    102,129x = 218,286 × 218,286
  4. Step 4: Simplify right side
    102,129x = 47,648,777,796
  5. Step 5: Solve for x
    x = 47,648,777,796/102,129
  6. Step 6: Final answer
    x = 466,554.83

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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.