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Finding the Fourth Proportional to 326,295.96, 489,340.26 and 221,786.52

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Solution

The fourth proportional to 326,295.96, 489,340.26 and 221,786.52 is: 332,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,295.96 : 489,340.26 = 221,786.52 : x
  2. Step 2: Convert to fraction form
    326,295.96/489,340.26 = 221,786.52/x
  3. Step 3: Cross multiply
    326,295.96x = 489,340.26 × 221,786.52
  4. Step 4: Simplify right side
    326,295.96x = 108,529,073,361.30
  5. Step 5: Solve for x
    x = 108,529,073,361.30/326,295.96
  6. Step 6: Final answer
    x = 332,609.31

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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.