Home / 396,840.45-547,643.94-215,555.91

Finding the Fourth Proportional to 396,840.45, 547,643.94 and 215,555.91

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Solution

The fourth proportional to 396,840.45, 547,643.94 and 215,555.91 is: 297,469.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,840.45 : 547,643.94 = 215,555.91 : x
  2. Step 2: Convert to fraction form
    396,840.45/547,643.94 = 215,555.91/x
  3. Step 3: Cross multiply
    396,840.45x = 547,643.94 × 215,555.91
  4. Step 4: Simplify right side
    396,840.45x = 118,047,887,842.69
  5. Step 5: Solve for x
    x = 118,047,887,842.69/396,840.45
  6. Step 6: Final answer
    x = 297,469.39

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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.