Home / 396,690.21-547,438.77-215,402.04

Finding the Fourth Proportional to 396,690.21, 547,438.77 and 215,402.04

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Solution

The fourth proportional to 396,690.21, 547,438.77 and 215,402.04 is: 297,258.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,690.21 : 547,438.77 = 215,402.04 : x
  2. Step 2: Convert to fraction form
    396,690.21/547,438.77 = 215,402.04/x
  3. Step 3: Cross multiply
    396,690.21x = 547,438.77 × 215,402.04
  4. Step 4: Simplify right side
    396,690.21x = 117,919,427,833.09
  5. Step 5: Solve for x
    x = 117,919,427,833.09/396,690.21
  6. Step 6: Final answer
    x = 297,258.23

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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.