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Finding the Fourth Proportional to 283,472.60, 391,193.15 and 156,147.89

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Solution

The fourth proportional to 283,472.60, 391,193.15 and 156,147.89 is: 215,484.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,472.60 : 391,193.15 = 156,147.89 : x
  2. Step 2: Convert to fraction form
    283,472.60/391,193.15 = 156,147.89/x
  3. Step 3: Cross multiply
    283,472.60x = 391,193.15 × 156,147.89
  4. Step 4: Simplify right side
    283,472.60x = 61,083,982,218.25
  5. Step 5: Solve for x
    x = 61,083,982,218.25/283,472.60
  6. Step 6: Final answer
    x = 215,484.61

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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.