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Finding the Fourth Proportional to 394,950.35, 545,029.20 and 213,661.73

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Solution

The fourth proportional to 394,950.35, 545,029.20 and 213,661.73 is: 294,851.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,950.35 : 545,029.20 = 213,661.73 : x
  2. Step 2: Convert to fraction form
    394,950.35/545,029.20 = 213,661.73/x
  3. Step 3: Cross multiply
    394,950.35x = 545,029.20 × 213,661.73
  4. Step 4: Simplify right side
    394,950.35x = 116,451,879,047.37
  5. Step 5: Solve for x
    x = 116,451,879,047.37/394,950.35
  6. Step 6: Final answer
    x = 294,851.95

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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.