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Finding the Fourth Proportional to 367,793.40, 551,690.10 and 131,143.80

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Solution

The fourth proportional to 367,793.40, 551,690.10 and 131,143.80 is: 196,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,793.40 : 551,690.10 = 131,143.80 : x
  2. Step 2: Convert to fraction form
    367,793.40/551,690.10 = 131,143.80/x
  3. Step 3: Cross multiply
    367,793.40x = 551,690.10 × 131,143.80
  4. Step 4: Simplify right side
    367,793.40x = 72,350,736,136.38
  5. Step 5: Solve for x
    x = 72,350,736,136.38/367,793.40
  6. Step 6: Final answer
    x = 196,715.70

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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.