Home / 396,815.87-547,609.88-215,531.35

Finding the Fourth Proportional to 396,815.87, 547,609.88 and 215,531.35

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Solution

The fourth proportional to 396,815.87, 547,609.88 and 215,531.35 is: 297,435.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,815.87 : 547,609.88 = 215,531.35 : x
  2. Step 2: Convert to fraction form
    396,815.87/547,609.88 = 215,531.35/x
  3. Step 3: Cross multiply
    396,815.87x = 547,609.88 × 215,531.35
  4. Step 4: Simplify right side
    396,815.87x = 118,027,095,879.54
  5. Step 5: Solve for x
    x = 118,027,095,879.54/396,815.87
  6. Step 6: Final answer
    x = 297,435.42

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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.