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Finding the Fourth Proportional to 329,432.58, 494,148.87 and 80,112.42

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Solution

The fourth proportional to 329,432.58, 494,148.87 and 80,112.42 is: 120,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,432.58 : 494,148.87 = 80,112.42 : x
  2. Step 2: Convert to fraction form
    329,432.58/494,148.87 = 80,112.42/x
  3. Step 3: Cross multiply
    329,432.58x = 494,148.87 × 80,112.42
  4. Step 4: Simplify right side
    329,432.58x = 39,587,461,815.97
  5. Step 5: Solve for x
    x = 39,587,461,815.97/329,432.58
  6. Step 6: Final answer
    x = 120,168.63

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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.