Home / 283,445.08-391,154.20-156,120.68

Finding the Fourth Proportional to 283,445.08, 391,154.20 and 156,120.68

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Solution

The fourth proportional to 283,445.08, 391,154.20 and 156,120.68 is: 215,446.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,445.08 : 391,154.20 = 156,120.68 : x
  2. Step 2: Convert to fraction form
    283,445.08/391,154.20 = 156,120.68/x
  3. Step 3: Cross multiply
    283,445.08x = 391,154.20 × 156,120.68
  4. Step 4: Simplify right side
    283,445.08x = 61,067,259,688.86
  5. Step 5: Solve for x
    x = 61,067,259,688.86/283,445.08
  6. Step 6: Final answer
    x = 215,446.53

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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.