Home / 396,513.55-547,174.06-215,221.65

Finding the Fourth Proportional to 396,513.55, 547,174.06 and 215,221.65

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Solution

The fourth proportional to 396,513.55, 547,174.06 and 215,221.65 is: 296,997.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,513.55 : 547,174.06 = 215,221.65 : x
  2. Step 2: Convert to fraction form
    396,513.55/547,174.06 = 215,221.65/x
  3. Step 3: Cross multiply
    396,513.55x = 547,174.06 × 215,221.65
  4. Step 4: Simplify right side
    396,513.55x = 117,763,704,030.40
  5. Step 5: Solve for x
    x = 117,763,704,030.40/396,513.55
  6. Step 6: Final answer
    x = 296,997.93

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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.