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Finding the Fourth Proportional to 198,998.46, 298,620.07 and 79,034.42

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Solution

The fourth proportional to 198,998.46, 298,620.07 and 79,034.42 is: 118,600.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,998.46 : 298,620.07 = 79,034.42 : x
  2. Step 2: Convert to fraction form
    198,998.46/298,620.07 = 79,034.42/x
  3. Step 3: Cross multiply
    198,998.46x = 298,620.07 × 79,034.42
  4. Step 4: Simplify right side
    198,998.46x = 23,601,264,411.91
  5. Step 5: Solve for x
    x = 23,601,264,411.91/198,998.46
  6. Step 6: Final answer
    x = 118,600.24

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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.