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Finding the Fourth Proportional to 299,641.20, 449,634.60 and 112,786.80

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Solution

The fourth proportional to 299,641.20, 449,634.60 and 112,786.80 is: 169,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,641.20 : 449,634.60 = 112,786.80 : x
  2. Step 2: Convert to fraction form
    299,641.20/449,634.60 = 112,786.80/x
  3. Step 3: Cross multiply
    299,641.20x = 449,634.60 × 112,786.80
  4. Step 4: Simplify right side
    299,641.20x = 50,712,847,703.28
  5. Step 5: Solve for x
    x = 50,712,847,703.28/299,641.20
  6. Step 6: Final answer
    x = 169,245.24

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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.