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Finding the Fourth Proportional to 399,195.43, 550,807.43 and 229,396.75

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Solution

The fourth proportional to 399,195.43, 550,807.43 and 229,396.75 is: 316,520.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,195.43 : 550,807.43 = 229,396.75 : x
  2. Step 2: Convert to fraction form
    399,195.43/550,807.43 = 229,396.75/x
  3. Step 3: Cross multiply
    399,195.43x = 550,807.43 × 229,396.75
  4. Step 4: Simplify right side
    399,195.43x = 126,353,431,793.85
  5. Step 5: Solve for x
    x = 126,353,431,793.85/399,195.43
  6. Step 6: Final answer
    x = 316,520.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.