Home / 396,479.03-547,142.70-215,191.22

Finding the Fourth Proportional to 396,479.03, 547,142.70 and 215,191.22

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Solution

The fourth proportional to 396,479.03, 547,142.70 and 215,191.22 is: 296,964.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,479.03 : 547,142.70 = 215,191.22 : x
  2. Step 2: Convert to fraction form
    396,479.03/547,142.70 = 215,191.22/x
  3. Step 3: Cross multiply
    396,479.03x = 547,142.70 × 215,191.22
  4. Step 4: Simplify right side
    396,479.03x = 117,740,302,391.38
  5. Step 5: Solve for x
    x = 117,740,302,391.38/396,479.03
  6. Step 6: Final answer
    x = 296,964.77

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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.