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Finding the Fourth Proportional to 391,974.80, 587,184.60 and 233,733.20

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Solution

The fourth proportional to 391,974.80, 587,184.60 and 233,733.20 is: 350,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,974.80 : 587,184.60 = 233,733.20 : x
  2. Step 2: Convert to fraction form
    391,974.80/587,184.60 = 233,733.20/x
  3. Step 3: Cross multiply
    391,974.80x = 587,184.60 × 233,733.20
  4. Step 4: Simplify right side
    391,974.80x = 137,244,535,548.72
  5. Step 5: Solve for x
    x = 137,244,535,548.72/391,974.80
  6. Step 6: Final answer
    x = 350,136.12

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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.