Home / 299,826.20-449,912.10-112,971.80

Finding the Fourth Proportional to 299,826.20, 449,912.10 and 112,971.80

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Solution

The fourth proportional to 299,826.20, 449,912.10 and 112,971.80 is: 169,522.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,826.20 : 449,912.10 = 112,971.80 : x
  2. Step 2: Convert to fraction form
    299,826.20/449,912.10 = 112,971.80/x
  3. Step 3: Cross multiply
    299,826.20x = 449,912.10 × 112,971.80
  4. Step 4: Simplify right side
    299,826.20x = 50,827,379,778.78
  5. Step 5: Solve for x
    x = 50,827,379,778.78/299,826.20
  6. Step 6: Final answer
    x = 169,522.81

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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.