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Finding the Fourth Proportional to 449,794.80, 674,736.20 and 129,954

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Solution

The fourth proportional to 449,794.80, 674,736.20 and 129,954 is: 194,943.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,794.80 : 674,736.20 = 129,954 : x
  2. Step 2: Convert to fraction form
    449,794.80/674,736.20 = 129,954/x
  3. Step 3: Cross multiply
    449,794.80x = 674,736.20 × 129,954
  4. Step 4: Simplify right side
    449,794.80x = 87,684,668,134.80
  5. Step 5: Solve for x
    x = 87,684,668,134.80/449,794.80
  6. Step 6: Final answer
    x = 194,943.71

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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.