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Finding the Fourth Proportional to 299,815.20, 449,895.60 and 112,960.80

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Solution

The fourth proportional to 299,815.20, 449,895.60 and 112,960.80 is: 169,506.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,815.20 : 449,895.60 = 112,960.80 : x
  2. Step 2: Convert to fraction form
    299,815.20/449,895.60 = 112,960.80/x
  3. Step 3: Cross multiply
    299,815.20x = 449,895.60 × 112,960.80
  4. Step 4: Simplify right side
    299,815.20x = 50,820,566,892.48
  5. Step 5: Solve for x
    x = 50,820,566,892.48/299,815.20
  6. Step 6: Final answer
    x = 169,506.31

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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.