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Finding the Fourth Proportional to 321,275.56, 443,371.71 and 193,926.28

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Solution

The fourth proportional to 321,275.56, 443,371.71 and 193,926.28 is: 267,625.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,275.56 : 443,371.71 = 193,926.28 : x
  2. Step 2: Convert to fraction form
    321,275.56/443,371.71 = 193,926.28/x
  3. Step 3: Cross multiply
    321,275.56x = 443,371.71 × 193,926.28
  4. Step 4: Simplify right side
    321,275.56x = 85,981,426,377.54
  5. Step 5: Solve for x
    x = 85,981,426,377.54/321,275.56
  6. Step 6: Final answer
    x = 267,625.17

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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.