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Finding the Fourth Proportional to 396,520.80, 594,585.82 and 143,763.31

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Solution

The fourth proportional to 396,520.80, 594,585.82 and 143,763.31 is: 215,574.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,520.80 : 594,585.82 = 143,763.31 : x
  2. Step 2: Convert to fraction form
    396,520.80/594,585.82 = 143,763.31/x
  3. Step 3: Cross multiply
    396,520.80x = 594,585.82 × 143,763.31
  4. Step 4: Simplify right side
    396,520.80x = 85,479,625,562.26
  5. Step 5: Solve for x
    x = 85,479,625,562.26/396,520.80
  6. Step 6: Final answer
    x = 215,574.13

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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.