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Finding the Fourth Proportional to 220,695.39, 331,043.91 and 54,483.39

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Solution

The fourth proportional to 220,695.39, 331,043.91 and 54,483.39 is: 81,725.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,695.39 : 331,043.91 = 54,483.39 : x
  2. Step 2: Convert to fraction form
    220,695.39/331,043.91 = 54,483.39/x
  3. Step 3: Cross multiply
    220,695.39x = 331,043.91 × 54,483.39
  4. Step 4: Simplify right side
    220,695.39x = 18,036,394,455.65
  5. Step 5: Solve for x
    x = 18,036,394,455.65/220,695.39
  6. Step 6: Final answer
    x = 81,725.29

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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.