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Finding the Fourth Proportional to 283,650.60, 391,446 and 156,334.38

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Solution

The fourth proportional to 283,650.60, 391,446 and 156,334.38 is: 215,745.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,650.60 : 391,446 = 156,334.38 : x
  2. Step 2: Convert to fraction form
    283,650.60/391,446 = 156,334.38/x
  3. Step 3: Cross multiply
    283,650.60x = 391,446 × 156,334.38
  4. Step 4: Simplify right side
    283,650.60x = 61,196,467,713.48
  5. Step 5: Solve for x
    x = 61,196,467,713.48/283,650.60
  6. Step 6: Final answer
    x = 215,745.95

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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.