Home / 396,857.45-547,673.47-215,579.75

Finding the Fourth Proportional to 396,857.45, 547,673.47 and 215,579.75

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Solution

The fourth proportional to 396,857.45, 547,673.47 and 215,579.75 is: 297,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,857.45 : 547,673.47 = 215,579.75 : x
  2. Step 2: Convert to fraction form
    396,857.45/547,673.47 = 215,579.75/x
  3. Step 3: Cross multiply
    396,857.45x = 547,673.47 × 215,579.75
  4. Step 4: Simplify right side
    396,857.45x = 118,067,310,574.47
  5. Step 5: Solve for x
    x = 118,067,310,574.47/396,857.45
  6. Step 6: Final answer
    x = 297,505.60

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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.