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Finding the Fourth Proportional to 329,320.88, 493,982.54 and 80,002.88

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Solution

The fourth proportional to 329,320.88, 493,982.54 and 80,002.88 is: 120,004.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,320.88 : 493,982.54 = 80,002.88 : x
  2. Step 2: Convert to fraction form
    329,320.88/493,982.54 = 80,002.88/x
  3. Step 3: Cross multiply
    329,320.88x = 493,982.54 × 80,002.88
  4. Step 4: Simplify right side
    329,320.88x = 39,520,022,999.79
  5. Step 5: Solve for x
    x = 39,520,022,999.79/329,320.88
  6. Step 6: Final answer
    x = 120,004.61

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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.