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Finding the Fourth Proportional to 198,999.30, 298,498.95 and 74,333.70

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Solution

The fourth proportional to 198,999.30, 298,498.95 and 74,333.70 is: 111,500.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,999.30 : 298,498.95 = 74,333.70 : x
  2. Step 2: Convert to fraction form
    198,999.30/298,498.95 = 74,333.70/x
  3. Step 3: Cross multiply
    198,999.30x = 298,498.95 × 74,333.70
  4. Step 4: Simplify right side
    198,999.30x = 22,188,531,399.62
  5. Step 5: Solve for x
    x = 22,188,531,399.62/198,999.30
  6. Step 6: Final answer
    x = 111,500.55

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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.