Home / 311,940.27-430,279.38-204,517.26

Finding the Fourth Proportional to 311,940.27, 430,279.38 and 204,517.26

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Solution

The fourth proportional to 311,940.27, 430,279.38 and 204,517.26 is: 282,103.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,940.27 : 430,279.38 = 204,517.26 : x
  2. Step 2: Convert to fraction form
    311,940.27/430,279.38 = 204,517.26/x
  3. Step 3: Cross multiply
    311,940.27x = 430,279.38 × 204,517.26
  4. Step 4: Simplify right side
    311,940.27x = 87,999,559,832.10
  5. Step 5: Solve for x
    x = 87,999,559,832.10/311,940.27
  6. Step 6: Final answer
    x = 282,103.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.