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Finding the Fourth Proportional to 361,236.72, 541,856.38 and 121,343.78

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Solution

The fourth proportional to 361,236.72, 541,856.38 and 121,343.78 is: 182,016.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,236.72 : 541,856.38 = 121,343.78 : x
  2. Step 2: Convert to fraction form
    361,236.72/541,856.38 = 121,343.78/x
  3. Step 3: Cross multiply
    361,236.72x = 541,856.38 × 121,343.78
  4. Step 4: Simplify right side
    361,236.72x = 65,750,901,366.32
  5. Step 5: Solve for x
    x = 65,750,901,366.32/361,236.72
  6. Step 6: Final answer
    x = 182,016.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.