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Finding the Fourth Proportional to 198,697.60, 298,046.40 and 131,046.40

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Solution

The fourth proportional to 198,697.60, 298,046.40 and 131,046.40 is: 196,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,697.60 : 298,046.40 = 131,046.40 : x
  2. Step 2: Convert to fraction form
    198,697.60/298,046.40 = 131,046.40/x
  3. Step 3: Cross multiply
    198,697.60x = 298,046.40 × 131,046.40
  4. Step 4: Simplify right side
    198,697.60x = 39,057,907,752.96
  5. Step 5: Solve for x
    x = 39,057,907,752.96/198,697.60
  6. Step 6: Final answer
    x = 196,569.60

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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.