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Finding the Fourth Proportional to 394,950.92, 545,031.72 and 213,662.39

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Solution

The fourth proportional to 394,950.92, 545,031.72 and 213,662.39 is: 294,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,950.92 : 545,031.72 = 213,662.39 : x
  2. Step 2: Convert to fraction form
    394,950.92/545,031.72 = 213,662.39/x
  3. Step 3: Cross multiply
    394,950.92x = 545,031.72 × 213,662.39
  4. Step 4: Simplify right side
    394,950.92x = 116,452,777,195.85
  5. Step 5: Solve for x
    x = 116,452,777,195.85/394,950.92
  6. Step 6: Final answer
    x = 294,853.80

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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.