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Finding the Fourth Proportional to 336,772.20, 505,231.20 and 100,138.80

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Solution

The fourth proportional to 336,772.20, 505,231.20 and 100,138.80 is: 150,229.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,772.20 : 505,231.20 = 100,138.80 : x
  2. Step 2: Convert to fraction form
    336,772.20/505,231.20 = 100,138.80/x
  3. Step 3: Cross multiply
    336,772.20x = 505,231.20 × 100,138.80
  4. Step 4: Simplify right side
    336,772.20x = 50,593,246,090.56
  5. Step 5: Solve for x
    x = 50,593,246,090.56/336,772.20
  6. Step 6: Final answer
    x = 150,229.88

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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.