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Finding the Fourth Proportional to 394,469.29, 544,367.78 and 213,181.17

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Solution

The fourth proportional to 394,469.29, 544,367.78 and 213,181.17 is: 294,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,469.29 : 544,367.78 = 213,181.17 : x
  2. Step 2: Convert to fraction form
    394,469.29/544,367.78 = 213,181.17/x
  3. Step 3: Cross multiply
    394,469.29x = 544,367.78 × 213,181.17
  4. Step 4: Simplify right side
    394,469.29x = 116,048,960,250.70
  5. Step 5: Solve for x
    x = 116,048,960,250.70/394,469.29
  6. Step 6: Final answer
    x = 294,190.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.