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Finding the Fourth Proportional to 396,545.98, 547,234.15 and 215,258.03

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Solution

The fourth proportional to 396,545.98, 547,234.15 and 215,258.03 is: 297,056.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,545.98 : 547,234.15 = 215,258.03 : x
  2. Step 2: Convert to fraction form
    396,545.98/547,234.15 = 215,258.03/x
  3. Step 3: Cross multiply
    396,545.98x = 547,234.15 × 215,258.03
  4. Step 4: Simplify right side
    396,545.98x = 117,796,544,001.43
  5. Step 5: Solve for x
    x = 117,796,544,001.43/396,545.98
  6. Step 6: Final answer
    x = 297,056.46

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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.