Home / 396,949.75-547,825.22-218,136.31

Finding the Fourth Proportional to 396,949.75, 547,825.22 and 218,136.31

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Solution

The fourth proportional to 396,949.75, 547,825.22 and 218,136.31 is: 301,047.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,949.75 : 547,825.22 = 218,136.31 : x
  2. Step 2: Convert to fraction form
    396,949.75/547,825.22 = 218,136.31/x
  3. Step 3: Cross multiply
    396,949.75x = 547,825.22 × 218,136.31
  4. Step 4: Simplify right side
    396,949.75x = 119,500,572,015.74
  5. Step 5: Solve for x
    x = 119,500,572,015.74/396,949.75
  6. Step 6: Final answer
    x = 301,047.10

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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.