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Finding the Fourth Proportional to 491,586.72, 737,420.13 and 136,600.80

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Solution

The fourth proportional to 491,586.72, 737,420.13 and 136,600.80 is: 204,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,586.72 : 737,420.13 = 136,600.80 : x
  2. Step 2: Convert to fraction form
    491,586.72/737,420.13 = 136,600.80/x
  3. Step 3: Cross multiply
    491,586.72x = 737,420.13 × 136,600.80
  4. Step 4: Simplify right side
    491,586.72x = 100,732,179,694.10
  5. Step 5: Solve for x
    x = 100,732,179,694.10/491,586.72
  6. Step 6: Final answer
    x = 204,912.33

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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.