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Finding the Fourth Proportional to 389,306.92, 537,227.22 and 219,556.84

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Solution

The fourth proportional to 389,306.92, 537,227.22 and 219,556.84 is: 302,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,306.92 : 537,227.22 = 219,556.84 : x
  2. Step 2: Convert to fraction form
    389,306.92/537,227.22 = 219,556.84/x
  3. Step 3: Cross multiply
    389,306.92x = 537,227.22 × 219,556.84
  4. Step 4: Simplify right side
    389,306.92x = 117,951,910,785.19
  5. Step 5: Solve for x
    x = 117,951,910,785.19/389,306.92
  6. Step 6: Final answer
    x = 302,979.23

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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.