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Finding the Fourth Proportional to 396,504.99, 547,162.23 and 215,213.01

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Solution

The fourth proportional to 396,504.99, 547,162.23 and 215,213.01 is: 296,986.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,504.99 : 547,162.23 = 215,213.01 : x
  2. Step 2: Convert to fraction form
    396,504.99/547,162.23 = 215,213.01/x
  3. Step 3: Cross multiply
    396,504.99x = 547,162.23 × 215,213.01
  4. Step 4: Simplify right side
    396,504.99x = 117,756,430,476.61
  5. Step 5: Solve for x
    x = 117,756,430,476.61/396,504.99
  6. Step 6: Final answer
    x = 296,986.00

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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.