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Finding the Fourth Proportional to 394,419.57, 544,298.92 and 213,131.49

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Solution

The fourth proportional to 394,419.57, 544,298.92 and 213,131.49 is: 294,121.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,419.57 : 544,298.92 = 213,131.49 : x
  2. Step 2: Convert to fraction form
    394,419.57/544,298.92 = 213,131.49/x
  3. Step 3: Cross multiply
    394,419.57x = 544,298.92 × 213,131.49
  4. Step 4: Simplify right side
    394,419.57x = 116,007,239,824.99
  5. Step 5: Solve for x
    x = 116,007,239,824.99/394,419.57
  6. Step 6: Final answer
    x = 294,121.41

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1.5x scale

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.