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Finding the Fourth Proportional to 491,908.53, 737,862.80 and 281,398.85

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Solution

The fourth proportional to 491,908.53, 737,862.80 and 281,398.85 is: 422,098.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,908.53 : 737,862.80 = 281,398.85 : x
  2. Step 2: Convert to fraction form
    491,908.53/737,862.80 = 281,398.85/x
  3. Step 3: Cross multiply
    491,908.53x = 737,862.80 × 281,398.85
  4. Step 4: Simplify right side
    491,908.53x = 207,633,743,377.78
  5. Step 5: Solve for x
    x = 207,633,743,377.78/491,908.53
  6. Step 6: Final answer
    x = 422,098.28

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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.