Home / 396,839.70-547,642.88-215,555.14

Finding the Fourth Proportional to 396,839.70, 547,642.88 and 215,555.14

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Solution

The fourth proportional to 396,839.70, 547,642.88 and 215,555.14 is: 297,468.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,839.70 : 547,642.88 = 215,555.14 : x
  2. Step 2: Convert to fraction form
    396,839.70/547,642.88 = 215,555.14/x
  3. Step 3: Cross multiply
    396,839.70x = 547,642.88 × 215,555.14
  4. Step 4: Simplify right side
    396,839.70x = 118,047,237,668.40
  5. Step 5: Solve for x
    x = 118,047,237,668.40/396,839.70
  6. Step 6: Final answer
    x = 297,468.32

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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.