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Finding the Fourth Proportional to 394,876, 544,928.88 and 213,587.92

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Solution

The fourth proportional to 394,876, 544,928.88 and 213,587.92 is: 294,751.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,876 : 544,928.88 = 213,587.92 : x
  2. Step 2: Convert to fraction form
    394,876/544,928.88 = 213,587.92/x
  3. Step 3: Cross multiply
    394,876x = 544,928.88 × 213,587.92
  4. Step 4: Simplify right side
    394,876x = 116,390,226,027.13
  5. Step 5: Solve for x
    x = 116,390,226,027.13/394,876
  6. Step 6: Final answer
    x = 294,751.33

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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.