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Finding the Fourth Proportional to 198,649.44, 298,116.48 and 72,289.44

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Solution

The fourth proportional to 198,649.44, 298,116.48 and 72,289.44 is: 108,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,649.44 : 298,116.48 = 72,289.44 : x
  2. Step 2: Convert to fraction form
    198,649.44/298,116.48 = 72,289.44/x
  3. Step 3: Cross multiply
    198,649.44x = 298,116.48 × 72,289.44
  4. Step 4: Simplify right side
    198,649.44x = 21,550,673,393.97
  5. Step 5: Solve for x
    x = 21,550,673,393.97/198,649.44
  6. Step 6: Final answer
    x = 108,485.95

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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.