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Finding the Fourth Proportional to 393,049.26, 589,540.95 and 140,516.37

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Solution

The fourth proportional to 393,049.26, 589,540.95 and 140,516.37 is: 210,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,049.26 : 589,540.95 = 140,516.37 : x
  2. Step 2: Convert to fraction form
    393,049.26/589,540.95 = 140,516.37/x
  3. Step 3: Cross multiply
    393,049.26x = 589,540.95 × 140,516.37
  4. Step 4: Simplify right side
    393,049.26x = 82,840,154,260.35
  5. Step 5: Solve for x
    x = 82,840,154,260.35/393,049.26
  6. Step 6: Final answer
    x = 210,762.78

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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.