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Finding the Fourth Proportional to 198,687, 298,031.22 and 188,720.76

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Solution

The fourth proportional to 198,687, 298,031.22 and 188,720.76 is: 283,081.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,687 : 298,031.22 = 188,720.76 : x
  2. Step 2: Convert to fraction form
    198,687/298,031.22 = 188,720.76/x
  3. Step 3: Cross multiply
    198,687x = 298,031.22 × 188,720.76
  4. Step 4: Simplify right side
    198,687x = 56,244,678,342.13
  5. Step 5: Solve for x
    x = 56,244,678,342.13/198,687
  6. Step 6: Final answer
    x = 283,081.82

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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.