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Finding the Fourth Proportional to 327,584.88, 491,387.04 and 90,945

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Solution

The fourth proportional to 327,584.88, 491,387.04 and 90,945 is: 136,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,584.88 : 491,387.04 = 90,945 : x
  2. Step 2: Convert to fraction form
    327,584.88/491,387.04 = 90,945/x
  3. Step 3: Cross multiply
    327,584.88x = 491,387.04 × 90,945
  4. Step 4: Simplify right side
    327,584.88x = 44,689,194,352.80
  5. Step 5: Solve for x
    x = 44,689,194,352.80/327,584.88
  6. Step 6: Final answer
    x = 136,420.20

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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.