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Finding the Fourth Proportional to 201,811.30, 302,500.95 and 68,568.10

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Solution

The fourth proportional to 201,811.30, 302,500.95 and 68,568.10 is: 102,778.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,811.30 : 302,500.95 = 68,568.10 : x
  2. Step 2: Convert to fraction form
    201,811.30/302,500.95 = 68,568.10/x
  3. Step 3: Cross multiply
    201,811.30x = 302,500.95 × 68,568.10
  4. Step 4: Simplify right side
    201,811.30x = 20,741,915,389.70
  5. Step 5: Solve for x
    x = 20,741,915,389.70/201,811.30
  6. Step 6: Final answer
    x = 102,778.76

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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.