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Finding the Fourth Proportional to 299,535.12, 449,399.92 and 89,174.88

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Solution

The fourth proportional to 299,535.12, 449,399.92 and 89,174.88 is: 133,791.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,535.12 : 449,399.92 = 89,174.88 : x
  2. Step 2: Convert to fraction form
    299,535.12/449,399.92 = 89,174.88/x
  3. Step 3: Cross multiply
    299,535.12x = 449,399.92 × 89,174.88
  4. Step 4: Simplify right side
    299,535.12x = 40,075,183,938.01
  5. Step 5: Solve for x
    x = 40,075,183,938.01/299,535.12
  6. Step 6: Final answer
    x = 133,791.27

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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.