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Finding the Fourth Proportional to 329,628.72, 494,149.92 and 119,219.88

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Solution

The fourth proportional to 329,628.72, 494,149.92 and 119,219.88 is: 178,723.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,628.72 : 494,149.92 = 119,219.88 : x
  2. Step 2: Convert to fraction form
    329,628.72/494,149.92 = 119,219.88/x
  3. Step 3: Cross multiply
    329,628.72x = 494,149.92 × 119,219.88
  4. Step 4: Simplify right side
    329,628.72x = 58,912,494,164.41
  5. Step 5: Solve for x
    x = 58,912,494,164.41/329,628.72
  6. Step 6: Final answer
    x = 178,723.79

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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.