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Finding the Fourth Proportional to 276,469.10, 414,375.60 and 143,280.80

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Solution

The fourth proportional to 276,469.10, 414,375.60 and 143,280.80 is: 214,751.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,469.10 : 414,375.60 = 143,280.80 : x
  2. Step 2: Convert to fraction form
    276,469.10/414,375.60 = 143,280.80/x
  3. Step 3: Cross multiply
    276,469.10x = 414,375.60 × 143,280.80
  4. Step 4: Simplify right side
    276,469.10x = 59,372,067,468.48
  5. Step 5: Solve for x
    x = 59,372,067,468.48/276,469.10
  6. Step 6: Final answer
    x = 214,751.19

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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.