Home / 283,789.54-391,632.69-156,469.78

Finding the Fourth Proportional to 283,789.54, 391,632.69 and 156,469.78

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Solution

The fourth proportional to 283,789.54, 391,632.69 and 156,469.78 is: 215,930.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,789.54 : 391,632.69 = 156,469.78 : x
  2. Step 2: Convert to fraction form
    283,789.54/391,632.69 = 156,469.78/x
  3. Step 3: Cross multiply
    283,789.54x = 391,632.69 × 156,469.78
  4. Step 4: Simplify right side
    283,789.54x = 61,278,680,845.11
  5. Step 5: Solve for x
    x = 61,278,680,845.11/283,789.54
  6. Step 6: Final answer
    x = 215,930.02

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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.