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Finding the Fourth Proportional to 367,791.40, 551,687.10 and 131,141.80

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Solution

The fourth proportional to 367,791.40, 551,687.10 and 131,141.80 is: 196,712.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,791.40 : 551,687.10 = 131,141.80 : x
  2. Step 2: Convert to fraction form
    367,791.40/551,687.10 = 131,141.80/x
  3. Step 3: Cross multiply
    367,791.40x = 551,687.10 × 131,141.80
  4. Step 4: Simplify right side
    367,791.40x = 72,349,239,330.78
  5. Step 5: Solve for x
    x = 72,349,239,330.78/367,791.40
  6. Step 6: Final answer
    x = 196,712.70

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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.