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Finding the Fourth Proportional to 319,843.44, 479,979 and 132,854.94

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Solution

The fourth proportional to 319,843.44, 479,979 and 132,854.94 is: 199,371.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,843.44 : 479,979 = 132,854.94 : x
  2. Step 2: Convert to fraction form
    319,843.44/479,979 = 132,854.94/x
  3. Step 3: Cross multiply
    319,843.44x = 479,979 × 132,854.94
  4. Step 4: Simplify right side
    319,843.44x = 63,767,581,246.26
  5. Step 5: Solve for x
    x = 63,767,581,246.26/319,843.44
  6. Step 6: Final answer
    x = 199,371.23

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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.