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Finding the Fourth Proportional to 329,876.80, 494,815.20 and 251,144.80

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Solution

The fourth proportional to 329,876.80, 494,815.20 and 251,144.80 is: 376,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,876.80 : 494,815.20 = 251,144.80 : x
  2. Step 2: Convert to fraction form
    329,876.80/494,815.20 = 251,144.80/x
  3. Step 3: Cross multiply
    329,876.80x = 494,815.20 × 251,144.80
  4. Step 4: Simplify right side
    329,876.80x = 124,270,264,440.96
  5. Step 5: Solve for x
    x = 124,270,264,440.96/329,876.80
  6. Step 6: Final answer
    x = 376,717.20

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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.