Home / 396,984.11-547,840.31-215,697.51

Finding the Fourth Proportional to 396,984.11, 547,840.31 and 215,697.51

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Solution

The fourth proportional to 396,984.11, 547,840.31 and 215,697.51 is: 297,663.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,984.11 : 547,840.31 = 215,697.51 : x
  2. Step 2: Convert to fraction form
    396,984.11/547,840.31 = 215,697.51/x
  3. Step 3: Cross multiply
    396,984.11x = 547,840.31 × 215,697.51
  4. Step 4: Simplify right side
    396,984.11x = 118,167,789,666.14
  5. Step 5: Solve for x
    x = 118,167,789,666.14/396,984.11
  6. Step 6: Final answer
    x = 297,663.78

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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.