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Finding the Third Proportional to 120,285 and 261,059

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Solution

The third proportional to 120,285 and 261,059 is: 566,586.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,285 : 261,059 = 261,059 : x
  2. Step 2: Convert to fraction form
    120,285/261,059 = 261,059/x
  3. Step 3: Cross multiply
    120,285x = 261,059 × 261,059
  4. Step 4: Simplify right side
    120,285x = 68,151,801,481
  5. Step 5: Solve for x
    x = 68,151,801,481/120,285
  6. Step 6: Final answer
    x = 566,586.04

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.