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Finding the Fourth Proportional to 271,019.20, 405,751.20 and 263,243.20

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Solution

The fourth proportional to 271,019.20, 405,751.20 and 263,243.20 is: 394,109.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,019.20 : 405,751.20 = 263,243.20 : x
  2. Step 2: Convert to fraction form
    271,019.20/405,751.20 = 263,243.20/x
  3. Step 3: Cross multiply
    271,019.20x = 405,751.20 × 263,243.20
  4. Step 4: Simplify right side
    271,019.20x = 106,811,244,291.84
  5. Step 5: Solve for x
    x = 106,811,244,291.84/271,019.20
  6. Step 6: Final answer
    x = 394,109.51

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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.