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Finding the Fourth Proportional to 276,163.43, 381,101.90 and 155,304.68

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Solution

The fourth proportional to 276,163.43, 381,101.90 and 155,304.68 is: 214,318.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,163.43 : 381,101.90 = 155,304.68 : x
  2. Step 2: Convert to fraction form
    276,163.43/381,101.90 = 155,304.68/x
  3. Step 3: Cross multiply
    276,163.43x = 381,101.90 × 155,304.68
  4. Step 4: Simplify right side
    276,163.43x = 59,186,905,944.86
  5. Step 5: Solve for x
    x = 59,186,905,944.86/276,163.43
  6. Step 6: Final answer
    x = 214,318.41

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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.