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Finding the Fourth Proportional to 201,211.68, 301,629.96 and 67,998.78

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Solution

The fourth proportional to 201,211.68, 301,629.96 and 67,998.78 is: 101,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,211.68 : 301,629.96 = 67,998.78 : x
  2. Step 2: Convert to fraction form
    201,211.68/301,629.96 = 67,998.78/x
  3. Step 3: Cross multiply
    201,211.68x = 301,629.96 × 67,998.78
  4. Step 4: Simplify right side
    201,211.68x = 20,510,469,291.45
  5. Step 5: Solve for x
    x = 20,510,469,291.45/201,211.68
  6. Step 6: Final answer
    x = 101,934.78

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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.