Home / 396,928.22-547,764.80-215,641.58

Finding the Fourth Proportional to 396,928.22, 547,764.80 and 215,641.58

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Solution

The fourth proportional to 396,928.22, 547,764.80 and 215,641.58 is: 297,587.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,928.22 : 547,764.80 = 215,641.58 : x
  2. Step 2: Convert to fraction form
    396,928.22/547,764.80 = 215,641.58/x
  3. Step 3: Cross multiply
    396,928.22x = 547,764.80 × 215,641.58
  4. Step 4: Simplify right side
    396,928.22x = 118,120,863,123.35
  5. Step 5: Solve for x
    x = 118,120,863,123.35/396,928.22
  6. Step 6: Final answer
    x = 297,587.47

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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.