Home / 396,400.12-547,029.40-215,107.44

Finding the Fourth Proportional to 396,400.12, 547,029.40 and 215,107.44

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Solution

The fourth proportional to 396,400.12, 547,029.40 and 215,107.44 is: 296,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,400.12 : 547,029.40 = 215,107.44 : x
  2. Step 2: Convert to fraction form
    396,400.12/547,029.40 = 215,107.44/x
  3. Step 3: Cross multiply
    396,400.12x = 547,029.40 × 215,107.44
  4. Step 4: Simplify right side
    396,400.12x = 117,670,093,838.74
  5. Step 5: Solve for x
    x = 117,670,093,838.74/396,400.12
  6. Step 6: Final answer
    x = 296,846.77

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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.