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Finding the Fourth Proportional to 329,761.20, 494,656.20 and 108,145.20

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Solution

The fourth proportional to 329,761.20, 494,656.20 and 108,145.20 is: 162,222.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,761.20 : 494,656.20 = 108,145.20 : x
  2. Step 2: Convert to fraction form
    329,761.20/494,656.20 = 108,145.20/x
  3. Step 3: Cross multiply
    329,761.20x = 494,656.20 × 108,145.20
  4. Step 4: Simplify right side
    329,761.20x = 53,494,693,680.24
  5. Step 5: Solve for x
    x = 53,494,693,680.24/329,761.20
  6. Step 6: Final answer
    x = 162,222.52

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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.