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Finding the Third Proportional to 129,471 and 203,442

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Solution

The third proportional to 129,471 and 203,442 is: 319,675.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,471 : 203,442 = 203,442 : x
  2. Step 2: Convert to fraction form
    129,471/203,442 = 203,442/x
  3. Step 3: Cross multiply
    129,471x = 203,442 × 203,442
  4. Step 4: Simplify right side
    129,471x = 41,388,647,364
  5. Step 5: Solve for x
    x = 41,388,647,364/129,471
  6. Step 6: Final answer
    x = 319,675.04

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.