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Finding the Fourth Proportional to 396,952.20, 595,428.30 and 219,805.20

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Solution

The fourth proportional to 396,952.20, 595,428.30 and 219,805.20 is: 329,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,952.20 : 595,428.30 = 219,805.20 : x
  2. Step 2: Convert to fraction form
    396,952.20/595,428.30 = 219,805.20/x
  3. Step 3: Cross multiply
    396,952.20x = 595,428.30 × 219,805.20
  4. Step 4: Simplify right side
    396,952.20x = 130,878,236,567.16
  5. Step 5: Solve for x
    x = 130,878,236,567.16/396,952.20
  6. Step 6: Final answer
    x = 329,707.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.