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Finding the Fourth Proportional to 396,883.62, 548,174.25 and 289,281.06

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Solution

The fourth proportional to 396,883.62, 548,174.25 and 289,281.06 is: 399,553.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,883.62 : 548,174.25 = 289,281.06 : x
  2. Step 2: Convert to fraction form
    396,883.62/548,174.25 = 289,281.06/x
  3. Step 3: Cross multiply
    396,883.62x = 548,174.25 × 289,281.06
  4. Step 4: Simplify right side
    396,883.62x = 158,576,428,104.71
  5. Step 5: Solve for x
    x = 158,576,428,104.71/396,883.62
  6. Step 6: Final answer
    x = 399,553.98

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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.