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Finding the Fourth Proportional to 269,387.52, 371,729.40 and 156,198

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Solution

The fourth proportional to 269,387.52, 371,729.40 and 156,198 is: 215,538.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,387.52 : 371,729.40 = 156,198 : x
  2. Step 2: Convert to fraction form
    269,387.52/371,729.40 = 156,198/x
  3. Step 3: Cross multiply
    269,387.52x = 371,729.40 × 156,198
  4. Step 4: Simplify right side
    269,387.52x = 58,063,388,821.20
  5. Step 5: Solve for x
    x = 58,063,388,821.20/269,387.52
  6. Step 6: Final answer
    x = 215,538.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.