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Finding the Fourth Proportional to 198,910.57, 298,393.34 and 63,978.44

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Solution

The fourth proportional to 198,910.57, 298,393.34 and 63,978.44 is: 95,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,910.57 : 298,393.34 = 63,978.44 : x
  2. Step 2: Convert to fraction form
    198,910.57/298,393.34 = 63,978.44/x
  3. Step 3: Cross multiply
    198,910.57x = 298,393.34 × 63,978.44
  4. Step 4: Simplify right side
    198,910.57x = 19,090,740,079.70
  5. Step 5: Solve for x
    x = 19,090,740,079.70/198,910.57
  6. Step 6: Final answer
    x = 95,976.50

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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.