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Finding the Fourth Proportional to 283,469.63, 391,188.08 and 156,147.95

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Solution

The fourth proportional to 283,469.63, 391,188.08 and 156,147.95 is: 215,484.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,469.63 : 391,188.08 = 156,147.95 : x
  2. Step 2: Convert to fraction form
    283,469.63/391,188.08 = 156,147.95/x
  3. Step 3: Cross multiply
    283,469.63x = 391,188.08 × 156,147.95
  4. Step 4: Simplify right side
    283,469.63x = 61,083,218,124.78
  5. Step 5: Solve for x
    x = 61,083,218,124.78/283,469.63
  6. Step 6: Final answer
    x = 215,484.17

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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.