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Finding the Fourth Proportional to 329,812.90, 494,136.15 and 279,657.70

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Solution

The fourth proportional to 329,812.90, 494,136.15 and 279,657.70 is: 418,992.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,812.90 : 494,136.15 = 279,657.70 : x
  2. Step 2: Convert to fraction form
    329,812.90/494,136.15 = 279,657.70/x
  3. Step 3: Cross multiply
    329,812.90x = 494,136.15 × 279,657.70
  4. Step 4: Simplify right side
    329,812.90x = 138,188,979,195.86
  5. Step 5: Solve for x
    x = 138,188,979,195.86/329,812.90
  6. Step 6: Final answer
    x = 418,992.04

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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.