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Finding the Fourth Proportional to 321,787.66, 444,148.60 and 219,854.33

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Solution

The fourth proportional to 321,787.66, 444,148.60 and 219,854.33 is: 303,454.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,787.66 : 444,148.60 = 219,854.33 : x
  2. Step 2: Convert to fraction form
    321,787.66/444,148.60 = 219,854.33/x
  3. Step 3: Cross multiply
    321,787.66x = 444,148.60 × 219,854.33
  4. Step 4: Simplify right side
    321,787.66x = 97,647,991,859.19
  5. Step 5: Solve for x
    x = 97,647,991,859.19/321,787.66
  6. Step 6: Final answer
    x = 303,454.74

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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.