Home / 283,788.54-391,631.31-156,468.78

Finding the Fourth Proportional to 283,788.54, 391,631.31 and 156,468.78

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Solution

The fourth proportional to 283,788.54, 391,631.31 and 156,468.78 is: 215,928.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,788.54 : 391,631.31 = 156,468.78 : x
  2. Step 2: Convert to fraction form
    283,788.54/391,631.31 = 156,468.78/x
  3. Step 3: Cross multiply
    283,788.54x = 391,631.31 × 156,468.78
  4. Step 4: Simplify right side
    283,788.54x = 61,278,073,285.50
  5. Step 5: Solve for x
    x = 61,278,073,285.50/283,788.54
  6. Step 6: Final answer
    x = 215,928.64

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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.