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Finding the Fourth Proportional to 276,366, 381,382.61 and 155,504.87

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Solution

The fourth proportional to 276,366, 381,382.61 and 155,504.87 is: 214,595.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,366 : 381,382.61 = 155,504.87 : x
  2. Step 2: Convert to fraction form
    276,366/381,382.61 = 155,504.87/x
  3. Step 3: Cross multiply
    276,366x = 381,382.61 × 155,504.87
  4. Step 4: Simplify right side
    276,366x = 59,306,853,188.31
  5. Step 5: Solve for x
    x = 59,306,853,188.31/276,366
  6. Step 6: Final answer
    x = 214,595.33

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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.