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Finding the Third Proportional to 267,717 and 414,534

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Solution

The third proportional to 267,717 and 414,534 is: 641,865.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,717 : 414,534 = 414,534 : x
  2. Step 2: Convert to fraction form
    267,717/414,534 = 414,534/x
  3. Step 3: Cross multiply
    267,717x = 414,534 × 414,534
  4. Step 4: Simplify right side
    267,717x = 171,838,437,156
  5. Step 5: Solve for x
    x = 171,838,437,156/267,717
  6. Step 6: Final answer
    x = 641,865.99

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.