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Finding the Fourth Proportional to 325,722.22, 489,124.31 and 219,787.58

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Solution

The fourth proportional to 325,722.22, 489,124.31 and 219,787.58 is: 330,046.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,722.22 : 489,124.31 = 219,787.58 : x
  2. Step 2: Convert to fraction form
    325,722.22/489,124.31 = 219,787.58/x
  3. Step 3: Cross multiply
    325,722.22x = 489,124.31 × 219,787.58
  4. Step 4: Simplify right side
    325,722.22x = 107,503,448,537.94
  5. Step 5: Solve for x
    x = 107,503,448,537.94/325,722.22
  6. Step 6: Final answer
    x = 330,046.41

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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.