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Finding the Fourth Proportional to 327,149.79, 490,686.66 and 90,510.90

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Solution

The fourth proportional to 327,149.79, 490,686.66 and 90,510.90 is: 135,755.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,149.79 : 490,686.66 = 90,510.90 : x
  2. Step 2: Convert to fraction form
    327,149.79/490,686.66 = 90,510.90/x
  3. Step 3: Cross multiply
    327,149.79x = 490,686.66 × 90,510.90
  4. Step 4: Simplify right side
    327,149.79x = 44,412,491,214.59
  5. Step 5: Solve for x
    x = 44,412,491,214.59/327,149.79
  6. Step 6: Final answer
    x = 135,755.83

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1.5x scale

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.