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Finding the Third Proportional to 80,486 and 176,908

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Solution

The third proportional to 80,486 and 176,908 is: 388,843.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,486 : 176,908 = 176,908 : x
  2. Step 2: Convert to fraction form
    80,486/176,908 = 176,908/x
  3. Step 3: Cross multiply
    80,486x = 176,908 × 176,908
  4. Step 4: Simplify right side
    80,486x = 31,296,440,464
  5. Step 5: Solve for x
    x = 31,296,440,464/80,486
  6. Step 6: Final answer
    x = 388,843.28

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.