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Finding the Fourth Proportional to 394,889.62, 544,947.78 and 213,601.48

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Solution

The fourth proportional to 394,889.62, 544,947.78 and 213,601.48 is: 294,770.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,889.62 : 544,947.78 = 213,601.48 : x
  2. Step 2: Convert to fraction form
    394,889.62/544,947.78 = 213,601.48/x
  3. Step 3: Cross multiply
    394,889.62x = 544,947.78 × 213,601.48
  4. Step 4: Simplify right side
    394,889.62x = 116,401,652,330.71
  5. Step 5: Solve for x
    x = 116,401,652,330.71/394,889.62
  6. Step 6: Final answer
    x = 294,770.10

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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.