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Finding the Fourth Proportional to 299,727.20, 449,763.60 and 112,872.80

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Solution

The fourth proportional to 299,727.20, 449,763.60 and 112,872.80 is: 169,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,727.20 : 449,763.60 = 112,872.80 : x
  2. Step 2: Convert to fraction form
    299,727.20/449,763.60 = 112,872.80/x
  3. Step 3: Cross multiply
    299,727.20x = 449,763.60 × 112,872.80
  4. Step 4: Simplify right side
    299,727.20x = 50,766,076,870.08
  5. Step 5: Solve for x
    x = 50,766,076,870.08/299,727.20
  6. Step 6: Final answer
    x = 169,374.27

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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.