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Finding the Fourth Proportional to 285,958.52, 428,658.84 and 136,158.56

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Solution

The fourth proportional to 285,958.52, 428,658.84 and 136,158.56 is: 204,105.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,958.52 : 428,658.84 = 136,158.56 : x
  2. Step 2: Convert to fraction form
    285,958.52/428,658.84 = 136,158.56/x
  3. Step 3: Cross multiply
    285,958.52x = 428,658.84 × 136,158.56
  4. Step 4: Simplify right side
    285,958.52x = 58,365,570,385.67
  5. Step 5: Solve for x
    x = 58,365,570,385.67/285,958.52
  6. Step 6: Final answer
    x = 204,105.02

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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.