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Finding the Fourth Proportional to 491,745.80, 737,517.90 and 136,670.60

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Solution

The fourth proportional to 491,745.80, 737,517.90 and 136,670.60 is: 204,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,745.80 : 737,517.90 = 136,670.60 : x
  2. Step 2: Convert to fraction form
    491,745.80/737,517.90 = 136,670.60/x
  3. Step 3: Cross multiply
    491,745.80x = 737,517.90 × 136,670.60
  4. Step 4: Simplify right side
    491,745.80x = 100,797,013,903.74
  5. Step 5: Solve for x
    x = 100,797,013,903.74/491,745.80
  6. Step 6: Final answer
    x = 204,977.88

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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.