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Finding the Fourth Proportional to 327,445.94, 491,168.91 and 90,788.61

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Solution

The fourth proportional to 327,445.94, 491,168.91 and 90,788.61 is: 136,182.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,445.94 : 491,168.91 = 90,788.61 : x
  2. Step 2: Convert to fraction form
    327,445.94/491,168.91 = 90,788.61/x
  3. Step 3: Cross multiply
    327,445.94x = 491,168.91 × 90,788.61
  4. Step 4: Simplify right side
    327,445.94x = 44,592,542,614.12
  5. Step 5: Solve for x
    x = 44,592,542,614.12/327,445.94
  6. Step 6: Final answer
    x = 136,182.92

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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.