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Finding the Fourth Proportional to 262,928.50, 394,195.92 and 85,329.52

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Solution

The fourth proportional to 262,928.50, 394,195.92 and 85,329.52 is: 127,930.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,928.50 : 394,195.92 = 85,329.52 : x
  2. Step 2: Convert to fraction form
    262,928.50/394,195.92 = 85,329.52/x
  3. Step 3: Cross multiply
    262,928.50x = 394,195.92 × 85,329.52
  4. Step 4: Simplify right side
    262,928.50x = 33,636,548,639.56
  5. Step 5: Solve for x
    x = 33,636,548,639.56/262,928.50
  6. Step 6: Final answer
    x = 127,930.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.