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Finding the Fourth Proportional to 264,180.80, 396,530.40 and 131,211.20

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Solution

The fourth proportional to 264,180.80, 396,530.40 and 131,211.20 is: 196,945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,180.80 : 396,530.40 = 131,211.20 : x
  2. Step 2: Convert to fraction form
    264,180.80/396,530.40 = 131,211.20/x
  3. Step 3: Cross multiply
    264,180.80x = 396,530.40 × 131,211.20
  4. Step 4: Simplify right side
    264,180.80x = 52,029,229,620.48
  5. Step 5: Solve for x
    x = 52,029,229,620.48/264,180.80
  6. Step 6: Final answer
    x = 196,945.54

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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.