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Finding the Fourth Proportional to 299,890.80, 449,107.20 and 159,339.60

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Solution

The fourth proportional to 299,890.80, 449,107.20 and 159,339.60 is: 238,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,890.80 : 449,107.20 = 159,339.60 : x
  2. Step 2: Convert to fraction form
    299,890.80/449,107.20 = 159,339.60/x
  3. Step 3: Cross multiply
    299,890.80x = 449,107.20 × 159,339.60
  4. Step 4: Simplify right side
    299,890.80x = 71,560,561,605.12
  5. Step 5: Solve for x
    x = 71,560,561,605.12/299,890.80
  6. Step 6: Final answer
    x = 238,622.06

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1.5x scale

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.