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Finding the Fourth Proportional to 362,540.80, 543,811.20 and 125,907.40

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Solution

The fourth proportional to 362,540.80, 543,811.20 and 125,907.40 is: 188,861.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,540.80 : 543,811.20 = 125,907.40 : x
  2. Step 2: Convert to fraction form
    362,540.80/543,811.20 = 125,907.40/x
  3. Step 3: Cross multiply
    362,540.80x = 543,811.20 × 125,907.40
  4. Step 4: Simplify right side
    362,540.80x = 68,469,854,282.88
  5. Step 5: Solve for x
    x = 68,469,854,282.88/362,540.80
  6. Step 6: Final answer
    x = 188,861.10

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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.