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Finding the Fourth Proportional to 276,375.84, 381,367.76 and 155,514.66

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Solution

The fourth proportional to 276,375.84, 381,367.76 and 155,514.66 is: 214,592.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,375.84 : 381,367.76 = 155,514.66 : x
  2. Step 2: Convert to fraction form
    276,375.84/381,367.76 = 155,514.66/x
  3. Step 3: Cross multiply
    276,375.84x = 381,367.76 × 155,514.66
  4. Step 4: Simplify right side
    276,375.84x = 59,308,276,753.79
  5. Step 5: Solve for x
    x = 59,308,276,753.79/276,375.84
  6. Step 6: Final answer
    x = 214,592.84

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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.