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Finding the Fourth Proportional to 394,659.49, 544,630.05 and 213,371.39

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Solution

The fourth proportional to 394,659.49, 544,630.05 and 213,371.39 is: 294,452.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,659.49 : 544,630.05 = 213,371.39 : x
  2. Step 2: Convert to fraction form
    394,659.49/544,630.05 = 213,371.39/x
  3. Step 3: Cross multiply
    394,659.49x = 544,630.05 × 213,371.39
  4. Step 4: Simplify right side
    394,659.49x = 116,208,471,234.18
  5. Step 5: Solve for x
    x = 116,208,471,234.18/394,659.49
  6. Step 6: Final answer
    x = 294,452.49

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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.