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Finding the Fourth Proportional to 278,587.41, 417,860.67 and 88,996.86

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Solution

The fourth proportional to 278,587.41, 417,860.67 and 88,996.86 is: 133,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,587.41 : 417,860.67 = 88,996.86 : x
  2. Step 2: Convert to fraction form
    278,587.41/417,860.67 = 88,996.86/x
  3. Step 3: Cross multiply
    278,587.41x = 417,860.67 × 88,996.86
  4. Step 4: Simplify right side
    278,587.41x = 37,188,287,881.23
  5. Step 5: Solve for x
    x = 37,188,287,881.23/278,587.41
  6. Step 6: Final answer
    x = 133,488.76

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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.