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Finding the Fourth Proportional to 276,516.96, 381,589.17 and 155,657.88

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Solution

The fourth proportional to 276,516.96, 381,589.17 and 155,657.88 is: 214,805.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,516.96 : 381,589.17 = 155,657.88 : x
  2. Step 2: Convert to fraction form
    276,516.96/381,589.17 = 155,657.88/x
  3. Step 3: Cross multiply
    276,516.96x = 381,589.17 × 155,657.88
  4. Step 4: Simplify right side
    276,516.96x = 59,397,361,233.16
  5. Step 5: Solve for x
    x = 59,397,361,233.16/276,516.96
  6. Step 6: Final answer
    x = 214,805.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.