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Finding the Fourth Proportional to 372,613.96, 558,930.12 and 135,956.60

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Solution

The fourth proportional to 372,613.96, 558,930.12 and 135,956.60 is: 203,938.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,613.96 : 558,930.12 = 135,956.60 : x
  2. Step 2: Convert to fraction form
    372,613.96/558,930.12 = 135,956.60/x
  3. Step 3: Cross multiply
    372,613.96x = 558,930.12 × 135,956.60
  4. Step 4: Simplify right side
    372,613.96x = 75,990,235,278.36
  5. Step 5: Solve for x
    x = 75,990,235,278.36/372,613.96
  6. Step 6: Final answer
    x = 203,938.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.