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Finding the Fourth Proportional to 396,485.04, 547,149.95 and 215,197.03

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Solution

The fourth proportional to 396,485.04, 547,149.95 and 215,197.03 is: 296,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,485.04 : 547,149.95 = 215,197.03 : x
  2. Step 2: Convert to fraction form
    396,485.04/547,149.95 = 215,197.03/x
  3. Step 3: Cross multiply
    396,485.04x = 547,149.95 × 215,197.03
  4. Step 4: Simplify right side
    396,485.04x = 117,745,043,128.66
  5. Step 5: Solve for x
    x = 117,745,043,128.66/396,485.04
  6. Step 6: Final answer
    x = 296,972.23

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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.