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Finding the Third Proportional to 275,649 and 442,269

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Solution

The third proportional to 275,649 and 442,269 is: 709,604.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,649 : 442,269 = 442,269 : x
  2. Step 2: Convert to fraction form
    275,649/442,269 = 442,269/x
  3. Step 3: Cross multiply
    275,649x = 442,269 × 442,269
  4. Step 4: Simplify right side
    275,649x = 195,601,868,361
  5. Step 5: Solve for x
    x = 195,601,868,361/275,649
  6. Step 6: Final answer
    x = 709,604.85

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.