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Finding the Fourth Proportional to 388,234.64, 582,351.96 and 107,751.92

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Solution

The fourth proportional to 388,234.64, 582,351.96 and 107,751.92 is: 161,627.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,234.64 : 582,351.96 = 107,751.92 : x
  2. Step 2: Convert to fraction form
    388,234.64/582,351.96 = 107,751.92/x
  3. Step 3: Cross multiply
    388,234.64x = 582,351.96 × 107,751.92
  4. Step 4: Simplify right side
    388,234.64x = 62,749,541,805.76
  5. Step 5: Solve for x
    x = 62,749,541,805.76/388,234.64
  6. Step 6: Final answer
    x = 161,627.88

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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.