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Finding the Fourth Proportional to 327,551.20, 491,271.84 and 90,917.92

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Solution

The fourth proportional to 327,551.20, 491,271.84 and 90,917.92 is: 136,361.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,551.20 : 491,271.84 = 90,917.92 : x
  2. Step 2: Convert to fraction form
    327,551.20/491,271.84 = 90,917.92/x
  3. Step 3: Cross multiply
    327,551.20x = 491,271.84 × 90,917.92
  4. Step 4: Simplify right side
    327,551.20x = 44,665,413,847.37
  5. Step 5: Solve for x
    x = 44,665,413,847.37/327,551.20
  6. Step 6: Final answer
    x = 136,361.62

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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.