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Finding the Fourth Proportional to 198,348.60, 297,717.30 and 98,621.40

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Solution

The fourth proportional to 198,348.60, 297,717.30 and 98,621.40 is: 148,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,348.60 : 297,717.30 = 98,621.40 : x
  2. Step 2: Convert to fraction form
    198,348.60/297,717.30 = 98,621.40/x
  3. Step 3: Cross multiply
    198,348.60x = 297,717.30 × 98,621.40
  4. Step 4: Simplify right side
    198,348.60x = 29,361,296,930.22
  5. Step 5: Solve for x
    x = 29,361,296,930.22/198,348.60
  6. Step 6: Final answer
    x = 148,028.76

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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.