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Finding the Fourth Proportional to 235,454.60, 353,338.95 and 85,694.85

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Solution

The fourth proportional to 235,454.60, 353,338.95 and 85,694.85 is: 128,599.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,454.60 : 353,338.95 = 85,694.85 : x
  2. Step 2: Convert to fraction form
    235,454.60/353,338.95 = 85,694.85/x
  3. Step 3: Cross multiply
    235,454.60x = 353,338.95 × 85,694.85
  4. Step 4: Simplify right side
    235,454.60x = 30,279,328,319.41
  5. Step 5: Solve for x
    x = 30,279,328,319.41/235,454.60
  6. Step 6: Final answer
    x = 128,599.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.