Home / 396,795.56-547,581.80-215,509.21

Finding the Fourth Proportional to 396,795.56, 547,581.80 and 215,509.21

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Solution

The fourth proportional to 396,795.56, 547,581.80 and 215,509.21 is: 297,404.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,795.56 : 547,581.80 = 215,509.21 : x
  2. Step 2: Convert to fraction form
    396,795.56/547,581.80 = 215,509.21/x
  3. Step 3: Cross multiply
    396,795.56x = 547,581.80 × 215,509.21
  4. Step 4: Simplify right side
    396,795.56x = 118,008,920,298.20
  5. Step 5: Solve for x
    x = 118,008,920,298.20/396,795.56
  6. Step 6: Final answer
    x = 297,404.84

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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.