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Finding the Fourth Proportional to 276,446.72, 381,404.40 and 225,371.40

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Solution

The fourth proportional to 276,446.72, 381,404.40 and 225,371.40 is: 310,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,446.72 : 381,404.40 = 225,371.40 : x
  2. Step 2: Convert to fraction form
    276,446.72/381,404.40 = 225,371.40/x
  3. Step 3: Cross multiply
    276,446.72x = 381,404.40 × 225,371.40
  4. Step 4: Simplify right side
    276,446.72x = 85,957,643,594.16
  5. Step 5: Solve for x
    x = 85,957,643,594.16/276,446.72
  6. Step 6: Final answer
    x = 310,937.48

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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.