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Finding the Fourth Proportional to 198,316.68, 297,593.21 and 71,966.78

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Solution

The fourth proportional to 198,316.68, 297,593.21 and 71,966.78 is: 107,993.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,316.68 : 297,593.21 = 71,966.78 : x
  2. Step 2: Convert to fraction form
    198,316.68/297,593.21 = 71,966.78/x
  3. Step 3: Cross multiply
    198,316.68x = 297,593.21 × 71,966.78
  4. Step 4: Simplify right side
    198,316.68x = 21,416,825,997.46
  5. Step 5: Solve for x
    x = 21,416,825,997.46/198,316.68
  6. Step 6: Final answer
    x = 107,993.06

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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.