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Finding the Fourth Proportional to 431,613.80, 647,607.27 and 231,700.73

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Solution

The fourth proportional to 431,613.80, 647,607.27 and 231,700.73 is: 347,651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,613.80 : 647,607.27 = 231,700.73 : x
  2. Step 2: Convert to fraction form
    431,613.80/647,607.27 = 231,700.73/x
  3. Step 3: Cross multiply
    431,613.80x = 647,607.27 × 231,700.73
  4. Step 4: Simplify right side
    431,613.80x = 150,051,077,212.31
  5. Step 5: Solve for x
    x = 150,051,077,212.31/431,613.80
  6. Step 6: Final answer
    x = 347,651.25

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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.