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Finding the Fourth Proportional to 276,568.70, 381,672.02 and 155,714.42

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Solution

The fourth proportional to 276,568.70, 381,672.02 and 155,714.42 is: 214,889.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,568.70 : 381,672.02 = 155,714.42 : x
  2. Step 2: Convert to fraction form
    276,568.70/381,672.02 = 155,714.42/x
  3. Step 3: Cross multiply
    276,568.70x = 381,672.02 × 155,714.42
  4. Step 4: Simplify right side
    276,568.70x = 59,431,837,224.53
  5. Step 5: Solve for x
    x = 59,431,837,224.53/276,568.70
  6. Step 6: Final answer
    x = 214,889.96

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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.