Home / 278,327.04-417,517.90-78,648.96

Finding the Fourth Proportional to 278,327.04, 417,517.90 and 78,648.96

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Solution

The fourth proportional to 278,327.04, 417,517.90 and 78,648.96 is: 117,981.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,327.04 : 417,517.90 = 78,648.96 : x
  2. Step 2: Convert to fraction form
    278,327.04/417,517.90 = 78,648.96/x
  3. Step 3: Cross multiply
    278,327.04x = 417,517.90 × 78,648.96
  4. Step 4: Simplify right side
    278,327.04x = 32,837,348,616.38
  5. Step 5: Solve for x
    x = 32,837,348,616.38/278,327.04
  6. Step 6: Final answer
    x = 117,981.17

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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.