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Finding the Fourth Proportional to 264,456.80, 396,944.40 and 131,487.20

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Solution

The fourth proportional to 264,456.80, 396,944.40 and 131,487.20 is: 197,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,456.80 : 396,944.40 = 131,487.20 : x
  2. Step 2: Convert to fraction form
    264,456.80/396,944.40 = 131,487.20/x
  3. Step 3: Cross multiply
    264,456.80x = 396,944.40 × 131,487.20
  4. Step 4: Simplify right side
    264,456.80x = 52,193,107,711.68
  5. Step 5: Solve for x
    x = 52,193,107,711.68/264,456.80
  6. Step 6: Final answer
    x = 197,359.67

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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.