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Finding the Fourth Proportional to 271,488.52, 405,028.40 and 256,791.88

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Solution

The fourth proportional to 271,488.52, 405,028.40 and 256,791.88 is: 383,102.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,488.52 : 405,028.40 = 256,791.88 : x
  2. Step 2: Convert to fraction form
    271,488.52/405,028.40 = 256,791.88/x
  3. Step 3: Cross multiply
    271,488.52x = 405,028.40 × 256,791.88
  4. Step 4: Simplify right side
    271,488.52x = 104,008,004,289.39
  5. Step 5: Solve for x
    x = 104,008,004,289.39/271,488.52
  6. Step 6: Final answer
    x = 383,102.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.