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Finding the Fourth Proportional to 396,537, 547,206.24 and 215,245.05

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Solution

The fourth proportional to 396,537, 547,206.24 and 215,245.05 is: 297,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,537 : 547,206.24 = 215,245.05 : x
  2. Step 2: Convert to fraction form
    396,537/547,206.24 = 215,245.05/x
  3. Step 3: Cross multiply
    396,537x = 547,206.24 × 215,245.05
  4. Step 4: Simplify right side
    396,537x = 117,783,434,489.11
  5. Step 5: Solve for x
    x = 117,783,434,489.11/396,537
  6. Step 6: Final answer
    x = 297,030.12

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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.