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Finding the Fourth Proportional to 198,699.60, 298,049.40 and 195,419.10

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Solution

The fourth proportional to 198,699.60, 298,049.40 and 195,419.10 is: 293,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,699.60 : 298,049.40 = 195,419.10 : x
  2. Step 2: Convert to fraction form
    198,699.60/298,049.40 = 195,419.10/x
  3. Step 3: Cross multiply
    198,699.60x = 298,049.40 × 195,419.10
  4. Step 4: Simplify right side
    198,699.60x = 58,244,545,503.54
  5. Step 5: Solve for x
    x = 58,244,545,503.54/198,699.60
  6. Step 6: Final answer
    x = 293,128.65

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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.