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Finding the Fourth Proportional to 201,399.20, 302,089.20 and 68,266.40

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Solution

The fourth proportional to 201,399.20, 302,089.20 and 68,266.40 is: 102,396.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,399.20 : 302,089.20 = 68,266.40 : x
  2. Step 2: Convert to fraction form
    201,399.20/302,089.20 = 68,266.40/x
  3. Step 3: Cross multiply
    201,399.20x = 302,089.20 × 68,266.40
  4. Step 4: Simplify right side
    201,399.20x = 20,622,542,162.88
  5. Step 5: Solve for x
    x = 20,622,542,162.88/201,399.20
  6. Step 6: Final answer
    x = 102,396.35

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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.