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Finding the Fourth Proportional to 327,585.90, 491,381.61 and 90,947.04

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Solution

The fourth proportional to 327,585.90, 491,381.61 and 90,947.04 is: 136,421.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,585.90 : 491,381.61 = 90,947.04 : x
  2. Step 2: Convert to fraction form
    327,585.90/491,381.61 = 90,947.04/x
  3. Step 3: Cross multiply
    327,585.90x = 491,381.61 × 90,947.04
  4. Step 4: Simplify right side
    327,585.90x = 44,689,700,756.20
  5. Step 5: Solve for x
    x = 44,689,700,756.20/327,585.90
  6. Step 6: Final answer
    x = 136,421.32

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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.