Home / 396,931.62-547,762.96-215,642.28

Finding the Fourth Proportional to 396,931.62, 547,762.96 and 215,642.28

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Solution

The fourth proportional to 396,931.62, 547,762.96 and 215,642.28 is: 297,584.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,931.62 : 547,762.96 = 215,642.28 : x
  2. Step 2: Convert to fraction form
    396,931.62/547,762.96 = 215,642.28/x
  3. Step 3: Cross multiply
    396,931.62x = 547,762.96 × 215,642.28
  4. Step 4: Simplify right side
    396,931.62x = 118,120,853,593.95
  5. Step 5: Solve for x
    x = 118,120,853,593.95/396,931.62
  6. Step 6: Final answer
    x = 297,584.89

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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.