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Finding the Fourth Proportional to 276,744.03, 381,856.03 and 155,859.43

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Solution

The fourth proportional to 276,744.03, 381,856.03 and 155,859.43 is: 215,057.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,744.03 : 381,856.03 = 155,859.43 : x
  2. Step 2: Convert to fraction form
    276,744.03/381,856.03 = 155,859.43/x
  3. Step 3: Cross multiply
    276,744.03x = 381,856.03 × 155,859.43
  4. Step 4: Simplify right side
    276,744.03x = 59,515,863,177.86
  5. Step 5: Solve for x
    x = 59,515,863,177.86/276,744.03
  6. Step 6: Final answer
    x = 215,057.44

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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.