Home / 431,576.20-647,558.70-206,849.80

Finding the Fourth Proportional to 431,576.20, 647,558.70 and 206,849.80

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Solution

The fourth proportional to 431,576.20, 647,558.70 and 206,849.80 is: 310,367.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,576.20 : 647,558.70 = 206,849.80 : x
  2. Step 2: Convert to fraction form
    431,576.20/647,558.70 = 206,849.80/x
  3. Step 3: Cross multiply
    431,576.20x = 647,558.70 × 206,849.80
  4. Step 4: Simplify right side
    431,576.20x = 133,947,387,583.26
  5. Step 5: Solve for x
    x = 133,947,387,583.26/431,576.20
  6. Step 6: Final answer
    x = 310,367.87

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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.