Home / 396,418.56-547,044.68-221,988.84

Finding the Fourth Proportional to 396,418.56, 547,044.68 and 221,988.84

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Solution

The fourth proportional to 396,418.56, 547,044.68 and 221,988.84 is: 306,337.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,418.56 : 547,044.68 = 221,988.84 : x
  2. Step 2: Convert to fraction form
    396,418.56/547,044.68 = 221,988.84/x
  3. Step 3: Cross multiply
    396,418.56x = 547,044.68 × 221,988.84
  4. Step 4: Simplify right side
    396,418.56x = 121,437,813,941.37
  5. Step 5: Solve for x
    x = 121,437,813,941.37/396,418.56
  6. Step 6: Final answer
    x = 306,337.36

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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.