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Finding the Fourth Proportional to 198,645.60, 298,083.60 and 73,999.20

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Solution

The fourth proportional to 198,645.60, 298,083.60 and 73,999.20 is: 111,041.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,645.60 : 298,083.60 = 73,999.20 : x
  2. Step 2: Convert to fraction form
    198,645.60/298,083.60 = 73,999.20/x
  3. Step 3: Cross multiply
    198,645.60x = 298,083.60 × 73,999.20
  4. Step 4: Simplify right side
    198,645.60x = 22,057,947,933.12
  5. Step 5: Solve for x
    x = 22,057,947,933.12/198,645.60
  6. Step 6: Final answer
    x = 111,041.71

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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.