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Finding the Third Proportional to 71,347 and 168,729

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Solution

The third proportional to 71,347 and 168,729 is: 399,028.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,347 : 168,729 = 168,729 : x
  2. Step 2: Convert to fraction form
    71,347/168,729 = 168,729/x
  3. Step 3: Cross multiply
    71,347x = 168,729 × 168,729
  4. Step 4: Simplify right side
    71,347x = 28,469,475,441
  5. Step 5: Solve for x
    x = 28,469,475,441/71,347
  6. Step 6: Final answer
    x = 399,028.35

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.