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Finding the Third Proportional to 138,304 and 213,596

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Solution

The third proportional to 138,304 and 213,596 is: 329,876.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,304 : 213,596 = 213,596 : x
  2. Step 2: Convert to fraction form
    138,304/213,596 = 213,596/x
  3. Step 3: Cross multiply
    138,304x = 213,596 × 213,596
  4. Step 4: Simplify right side
    138,304x = 45,623,251,216
  5. Step 5: Solve for x
    x = 45,623,251,216/138,304
  6. Step 6: Final answer
    x = 329,876.59

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.