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Finding the Fourth Proportional to 283,785.78, 391,627.02 and 156,465.90

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Solution

The fourth proportional to 283,785.78, 391,627.02 and 156,465.90 is: 215,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,785.78 : 391,627.02 = 156,465.90 : x
  2. Step 2: Convert to fraction form
    283,785.78/391,627.02 = 156,465.90/x
  3. Step 3: Cross multiply
    283,785.78x = 391,627.02 × 156,465.90
  4. Step 4: Simplify right side
    283,785.78x = 61,276,274,148.62
  5. Step 5: Solve for x
    x = 61,276,274,148.62/283,785.78
  6. Step 6: Final answer
    x = 215,924.40

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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.