Home / 283,445.28-391,154.49-156,120.89

Finding the Fourth Proportional to 283,445.28, 391,154.49 and 156,120.89

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Solution

The fourth proportional to 283,445.28, 391,154.49 and 156,120.89 is: 215,446.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,445.28 : 391,154.49 = 156,120.89 : x
  2. Step 2: Convert to fraction form
    283,445.28/391,154.49 = 156,120.89/x
  3. Step 3: Cross multiply
    283,445.28x = 391,154.49 × 156,120.89
  4. Step 4: Simplify right side
    283,445.28x = 61,067,385,150.52
  5. Step 5: Solve for x
    x = 61,067,385,150.52/283,445.28
  6. Step 6: Final answer
    x = 215,446.82

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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.