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Finding the Fourth Proportional to 198,999.60, 298,499.40 and 132,223.20

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Solution

The fourth proportional to 198,999.60, 298,499.40 and 132,223.20 is: 198,334.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,999.60 : 298,499.40 = 132,223.20 : x
  2. Step 2: Convert to fraction form
    198,999.60/298,499.40 = 132,223.20/x
  3. Step 3: Cross multiply
    198,999.60x = 298,499.40 × 132,223.20
  4. Step 4: Simplify right side
    198,999.60x = 39,468,545,866.08
  5. Step 5: Solve for x
    x = 39,468,545,866.08/198,999.60
  6. Step 6: Final answer
    x = 198,334.80

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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.