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Finding the Fourth Proportional to 243,367.32, 335,843.28 and 135,938.92

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Solution

The fourth proportional to 243,367.32, 335,843.28 and 135,938.92 is: 187,593.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,367.32 : 335,843.28 = 135,938.92 : x
  2. Step 2: Convert to fraction form
    243,367.32/335,843.28 = 135,938.92/x
  3. Step 3: Cross multiply
    243,367.32x = 335,843.28 × 135,938.92
  4. Step 4: Simplify right side
    243,367.32x = 45,654,172,772.46
  5. Step 5: Solve for x
    x = 45,654,172,772.46/243,367.32
  6. Step 6: Final answer
    x = 187,593.69

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1.5x scale

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.