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Finding the Fourth Proportional to 394,604.61, 544,550.95 and 213,314.97

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Solution

The fourth proportional to 394,604.61, 544,550.95 and 213,314.97 is: 294,372.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,604.61 : 544,550.95 = 213,314.97 : x
  2. Step 2: Convert to fraction form
    394,604.61/544,550.95 = 213,314.97/x
  3. Step 3: Cross multiply
    394,604.61x = 544,550.95 × 213,314.97
  4. Step 4: Simplify right side
    394,604.61x = 116,160,868,808.33
  5. Step 5: Solve for x
    x = 116,160,868,808.33/394,604.61
  6. Step 6: Final answer
    x = 294,372.81

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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.