Home / 396,631.48-547,348.42-215,339.84

Finding the Fourth Proportional to 396,631.48, 547,348.42 and 215,339.84

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Solution

The fourth proportional to 396,631.48, 547,348.42 and 215,339.84 is: 297,167.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,631.48 : 547,348.42 = 215,339.84 : x
  2. Step 2: Convert to fraction form
    396,631.48/547,348.42 = 215,339.84/x
  3. Step 3: Cross multiply
    396,631.48x = 547,348.42 × 215,339.84
  4. Step 4: Simplify right side
    396,631.48x = 117,865,921,187.05
  5. Step 5: Solve for x
    x = 117,865,921,187.05/396,631.48
  6. Step 6: Final answer
    x = 297,167.34

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1.5x scale

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.