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Finding the Fourth Proportional to 201,717.70, 302,489.07 and 68,562.20

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Solution

The fourth proportional to 201,717.70, 302,489.07 and 68,562.20 is: 102,813.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,717.70 : 302,489.07 = 68,562.20 : x
  2. Step 2: Convert to fraction form
    201,717.70/302,489.07 = 68,562.20/x
  3. Step 3: Cross multiply
    201,717.70x = 302,489.07 × 68,562.20
  4. Step 4: Simplify right side
    201,717.70x = 20,739,316,614.27
  5. Step 5: Solve for x
    x = 20,739,316,614.27/201,717.70
  6. Step 6: Final answer
    x = 102,813.57

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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.