Home / 396,486.43-547,136.61-215,194.46

Finding the Fourth Proportional to 396,486.43, 547,136.61 and 215,194.46

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Solution

The fourth proportional to 396,486.43, 547,136.61 and 215,194.46 is: 296,960.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,486.43 : 547,136.61 = 215,194.46 : x
  2. Step 2: Convert to fraction form
    396,486.43/547,136.61 = 215,194.46/x
  3. Step 3: Cross multiply
    396,486.43x = 547,136.61 × 215,194.46
  4. Step 4: Simplify right side
    396,486.43x = 117,740,763,792.52
  5. Step 5: Solve for x
    x = 117,740,763,792.52/396,486.43
  6. Step 6: Final answer
    x = 296,960.39

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1.5x scale

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.