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Finding the Fourth Proportional to 299,879.20, 449,842.02 and 100,200.28

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Solution

The fourth proportional to 299,879.20, 449,842.02 and 100,200.28 is: 150,308.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,879.20 : 449,842.02 = 100,200.28 : x
  2. Step 2: Convert to fraction form
    299,879.20/449,842.02 = 100,200.28/x
  3. Step 3: Cross multiply
    299,879.20x = 449,842.02 × 100,200.28
  4. Step 4: Simplify right side
    299,879.20x = 45,074,296,359.77
  5. Step 5: Solve for x
    x = 45,074,296,359.77/299,879.20
  6. Step 6: Final answer
    x = 150,308.18

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1.5x scale

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.