Home / 396,982.22-547,840.46-215,697.20

Finding the Fourth Proportional to 396,982.22, 547,840.46 and 215,697.20

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Solution

The fourth proportional to 396,982.22, 547,840.46 and 215,697.20 is: 297,664.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,982.22 : 547,840.46 = 215,697.20 : x
  2. Step 2: Convert to fraction form
    396,982.22/547,840.46 = 215,697.20/x
  3. Step 3: Cross multiply
    396,982.22x = 547,840.46 × 215,697.20
  4. Step 4: Simplify right side
    396,982.22x = 118,167,653,268.71
  5. Step 5: Solve for x
    x = 118,167,653,268.71/396,982.22
  6. Step 6: Final answer
    x = 297,664.85

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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.