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Finding the Fourth Proportional to 198,395.30, 297,500.88 and 72,019.64

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Solution

The fourth proportional to 198,395.30, 297,500.88 and 72,019.64 is: 107,996.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,395.30 : 297,500.88 = 72,019.64 : x
  2. Step 2: Convert to fraction form
    198,395.30/297,500.88 = 72,019.64/x
  3. Step 3: Cross multiply
    198,395.30x = 297,500.88 × 72,019.64
  4. Step 4: Simplify right side
    198,395.30x = 21,425,906,277.28
  5. Step 5: Solve for x
    x = 21,425,906,277.28/198,395.30
  6. Step 6: Final answer
    x = 107,996.04

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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.