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Finding the Fourth Proportional to 299,960.10, 449,940.15 and 252,720.90

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Solution

The fourth proportional to 299,960.10, 449,940.15 and 252,720.90 is: 379,081.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,960.10 : 449,940.15 = 252,720.90 : x
  2. Step 2: Convert to fraction form
    299,960.10/449,940.15 = 252,720.90/x
  3. Step 3: Cross multiply
    299,960.10x = 449,940.15 × 252,720.90
  4. Step 4: Simplify right side
    299,960.10x = 113,709,279,654.14
  5. Step 5: Solve for x
    x = 113,709,279,654.14/299,960.10
  6. Step 6: Final answer
    x = 379,081.35

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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.