Home / 396,431.73-547,079.85-215,145.27

Finding the Fourth Proportional to 396,431.73, 547,079.85 and 215,145.27

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Solution

The fourth proportional to 396,431.73, 547,079.85 and 215,145.27 is: 296,902.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,431.73 : 547,079.85 = 215,145.27 : x
  2. Step 2: Convert to fraction form
    396,431.73/547,079.85 = 215,145.27/x
  3. Step 3: Cross multiply
    396,431.73x = 547,079.85 × 215,145.27
  4. Step 4: Simplify right side
    396,431.73x = 117,701,642,039.81
  5. Step 5: Solve for x
    x = 117,701,642,039.81/396,431.73
  6. Step 6: Final answer
    x = 296,902.68

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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.