Home / 283,445.22-391,154.39-156,120.81

Finding the Fourth Proportional to 283,445.22, 391,154.39 and 156,120.81

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Solution

The fourth proportional to 283,445.22, 391,154.39 and 156,120.81 is: 215,446.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,445.22 : 391,154.39 = 156,120.81 : x
  2. Step 2: Convert to fraction form
    283,445.22/391,154.39 = 156,120.81/x
  3. Step 3: Cross multiply
    283,445.22x = 391,154.39 × 156,120.81
  4. Step 4: Simplify right side
    283,445.22x = 61,067,340,201.86
  5. Step 5: Solve for x
    x = 61,067,340,201.86/283,445.22
  6. Step 6: Final answer
    x = 215,446.71

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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.