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Finding the Fourth Proportional to 396,510.01, 547,184.34 and 215,221.97

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Solution

The fourth proportional to 396,510.01, 547,184.34 and 215,221.97 is: 297,006.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,510.01 : 547,184.34 = 215,221.97 : x
  2. Step 2: Convert to fraction form
    396,510.01/547,184.34 = 215,221.97/x
  3. Step 3: Cross multiply
    396,510.01x = 547,184.34 × 215,221.97
  4. Step 4: Simplify right side
    396,510.01x = 117,766,091,607.95
  5. Step 5: Solve for x
    x = 117,766,091,607.95/396,510.01
  6. Step 6: Final answer
    x = 297,006.60

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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.