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Finding the Fourth Proportional to 299,569.70, 449,493.47 and 131,067.80

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Solution

The fourth proportional to 299,569.70, 449,493.47 and 131,067.80 is: 196,662.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,569.70 : 449,493.47 = 131,067.80 : x
  2. Step 2: Convert to fraction form
    299,569.70/449,493.47 = 131,067.80/x
  3. Step 3: Cross multiply
    299,569.70x = 449,493.47 × 131,067.80
  4. Step 4: Simplify right side
    299,569.70x = 58,914,117,324.46
  5. Step 5: Solve for x
    x = 58,914,117,324.46/299,569.70
  6. Step 6: Final answer
    x = 196,662.47

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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.