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Finding the Fourth Proportional to 243,248.12, 335,678.92 and 135,819.84

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Solution

The fourth proportional to 243,248.12, 335,678.92 and 135,819.84 is: 187,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,248.12 : 335,678.92 = 135,819.84 : x
  2. Step 2: Convert to fraction form
    243,248.12/335,678.92 = 135,819.84/x
  3. Step 3: Cross multiply
    243,248.12x = 335,678.92 × 135,819.84
  4. Step 4: Simplify right side
    243,248.12x = 45,591,857,205.77
  5. Step 5: Solve for x
    x = 45,591,857,205.77/243,248.12
  6. Step 6: Final answer
    x = 187,429.43

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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.