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Finding the Fourth Proportional to 227,067.69, 313,329.90 and 139,839

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Solution

The fourth proportional to 227,067.69, 313,329.90 and 139,839 is: 192,963.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,067.69 : 313,329.90 = 139,839 : x
  2. Step 2: Convert to fraction form
    227,067.69/313,329.90 = 139,839/x
  3. Step 3: Cross multiply
    227,067.69x = 313,329.90 × 139,839
  4. Step 4: Simplify right side
    227,067.69x = 43,815,739,886.10
  5. Step 5: Solve for x
    x = 43,815,739,886.10/227,067.69
  6. Step 6: Final answer
    x = 192,963.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.