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Finding the Fourth Proportional to 279,755.75, 419,334.81 and 159,553.91

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Solution

The fourth proportional to 279,755.75, 419,334.81 and 159,553.91 is: 239,160.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,755.75 : 419,334.81 = 159,553.91 : x
  2. Step 2: Convert to fraction form
    279,755.75/419,334.81 = 159,553.91/x
  3. Step 3: Cross multiply
    279,755.75x = 419,334.81 × 159,553.91
  4. Step 4: Simplify right side
    279,755.75x = 66,906,506,437.93
  5. Step 5: Solve for x
    x = 66,906,506,437.93/279,755.75
  6. Step 6: Final answer
    x = 239,160.44

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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.