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Finding the Fourth Proportional to 276,115.91, 381,038.04 and 156,883.91

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Solution

The fourth proportional to 276,115.91, 381,038.04 and 156,883.91 is: 216,498.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,115.91 : 381,038.04 = 156,883.91 : x
  2. Step 2: Convert to fraction form
    276,115.91/381,038.04 = 156,883.91/x
  3. Step 3: Cross multiply
    276,115.91x = 381,038.04 × 156,883.91
  4. Step 4: Simplify right side
    276,115.91x = 59,778,737,573.94
  5. Step 5: Solve for x
    x = 59,778,737,573.94/276,115.91
  6. Step 6: Final answer
    x = 216,498.71

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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.