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Finding the Fourth Proportional to 396,491.20, 547,143.19 and 215,199.25

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Solution

The fourth proportional to 396,491.20, 547,143.19 and 215,199.25 is: 296,967.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,491.20 : 547,143.19 = 215,199.25 : x
  2. Step 2: Convert to fraction form
    396,491.20/547,143.19 = 215,199.25/x
  3. Step 3: Cross multiply
    396,491.20x = 547,143.19 × 215,199.25
  4. Step 4: Simplify right side
    396,491.20x = 117,744,802,224.75
  5. Step 5: Solve for x
    x = 117,744,802,224.75/396,491.20
  6. Step 6: Final answer
    x = 296,967.00

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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.