Home / 396,931.12-547,768.68-215,644.36

Finding the Fourth Proportional to 396,931.12, 547,768.68 and 215,644.36

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Solution

The fourth proportional to 396,931.12, 547,768.68 and 215,644.36 is: 297,591.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,931.12 : 547,768.68 = 215,644.36 : x
  2. Step 2: Convert to fraction form
    396,931.12/547,768.68 = 215,644.36/x
  3. Step 3: Cross multiply
    396,931.12x = 547,768.68 × 215,644.36
  4. Step 4: Simplify right side
    396,931.12x = 118,123,226,426.65
  5. Step 5: Solve for x
    x = 118,123,226,426.65/396,931.12
  6. Step 6: Final answer
    x = 297,591.25

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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.