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Finding the Fourth Proportional to 198,745.74, 297,768.66 and 186,906.78

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Solution

The fourth proportional to 198,745.74, 297,768.66 and 186,906.78 is: 280,031.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,745.74 : 297,768.66 = 186,906.78 : x
  2. Step 2: Convert to fraction form
    198,745.74/297,768.66 = 186,906.78/x
  3. Step 3: Cross multiply
    198,745.74x = 297,768.66 × 186,906.78
  4. Step 4: Simplify right side
    198,745.74x = 55,654,981,425.51
  5. Step 5: Solve for x
    x = 55,654,981,425.51/198,745.74
  6. Step 6: Final answer
    x = 280,031.07

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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.