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Finding the Fourth Proportional to 327,879.20, 492,279.60 and 203,463.20

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Solution

The fourth proportional to 327,879.20, 492,279.60 and 203,463.20 is: 305,480.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,879.20 : 492,279.60 = 203,463.20 : x
  2. Step 2: Convert to fraction form
    327,879.20/492,279.60 = 203,463.20/x
  3. Step 3: Cross multiply
    327,879.20x = 492,279.60 × 203,463.20
  4. Step 4: Simplify right side
    327,879.20x = 100,160,782,710.72
  5. Step 5: Solve for x
    x = 100,160,782,710.72/327,879.20
  6. Step 6: Final answer
    x = 305,480.75

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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.