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Finding the Fourth Proportional to 143,583.54, 215,375.26 and 38,399.78

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Solution

The fourth proportional to 143,583.54, 215,375.26 and 38,399.78 is: 57,599.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,583.54 : 215,375.26 = 38,399.78 : x
  2. Step 2: Convert to fraction form
    143,583.54/215,375.26 = 38,399.78/x
  3. Step 3: Cross multiply
    143,583.54x = 215,375.26 × 38,399.78
  4. Step 4: Simplify right side
    143,583.54x = 8,270,361,524.57
  5. Step 5: Solve for x
    x = 8,270,361,524.57/143,583.54
  6. Step 6: Final answer
    x = 57,599.65

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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.