Home / 431,382.19-647,074.96-131,861.61

Finding the Fourth Proportional to 431,382.19, 647,074.96 and 131,861.61

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Solution

The fourth proportional to 431,382.19, 647,074.96 and 131,861.61 is: 197,792.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,382.19 : 647,074.96 = 131,861.61 : x
  2. Step 2: Convert to fraction form
    431,382.19/647,074.96 = 131,861.61/x
  3. Step 3: Cross multiply
    431,382.19x = 647,074.96 × 131,861.61
  4. Step 4: Simplify right side
    431,382.19x = 85,324,343,260.10
  5. Step 5: Solve for x
    x = 85,324,343,260.10/431,382.19
  6. Step 6: Final answer
    x = 197,792.92

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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.