Home / 431,531.38-647,369.46-131,941.75

Finding the Fourth Proportional to 431,531.38, 647,369.46 and 131,941.75

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Solution

The fourth proportional to 431,531.38, 647,369.46 and 131,941.75 is: 197,934.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,531.38 : 647,369.46 = 131,941.75 : x
  2. Step 2: Convert to fraction form
    431,531.38/647,369.46 = 131,941.75/x
  3. Step 3: Cross multiply
    431,531.38x = 647,369.46 × 131,941.75
  4. Step 4: Simplify right side
    431,531.38x = 85,415,059,448.96
  5. Step 5: Solve for x
    x = 85,415,059,448.96/431,531.38
  6. Step 6: Final answer
    x = 197,934.76

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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.