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Finding the Fourth Proportional to 278,773.57, 418,176.24 and 79,078.33

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Solution

The fourth proportional to 278,773.57, 418,176.24 and 79,078.33 is: 118,622.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,773.57 : 418,176.24 = 79,078.33 : x
  2. Step 2: Convert to fraction form
    278,773.57/418,176.24 = 79,078.33/x
  3. Step 3: Cross multiply
    278,773.57x = 418,176.24 × 79,078.33
  4. Step 4: Simplify right side
    278,773.57x = 33,068,678,704.88
  5. Step 5: Solve for x
    x = 33,068,678,704.88/278,773.57
  6. Step 6: Final answer
    x = 118,622.00

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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.