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Finding the Fourth Proportional to 278,164.80, 417,279.80 and 88,558.79

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Solution

The fourth proportional to 278,164.80, 417,279.80 and 88,558.79 is: 132,848.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,164.80 : 417,279.80 = 88,558.79 : x
  2. Step 2: Convert to fraction form
    278,164.80/417,279.80 = 88,558.79/x
  3. Step 3: Cross multiply
    278,164.80x = 417,279.80 × 88,558.79
  4. Step 4: Simplify right side
    278,164.80x = 36,953,792,314.44
  5. Step 5: Solve for x
    x = 36,953,792,314.44/278,164.80
  6. Step 6: Final answer
    x = 132,848.56

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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.