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Finding the Fourth Proportional to 198,891.49, 298,307.60 and 65,772.44

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Solution

The fourth proportional to 198,891.49, 298,307.60 and 65,772.44 is: 98,648.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,891.49 : 298,307.60 = 65,772.44 : x
  2. Step 2: Convert to fraction form
    198,891.49/298,307.60 = 65,772.44/x
  3. Step 3: Cross multiply
    198,891.49x = 298,307.60 × 65,772.44
  4. Step 4: Simplify right side
    198,891.49x = 19,620,418,393.68
  5. Step 5: Solve for x
    x = 19,620,418,393.68/198,891.49
  6. Step 6: Final answer
    x = 98,648.86

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1.5x scale

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.