Home / 396,390.47-547,019.21-226,628.15

Finding the Fourth Proportional to 396,390.47, 547,019.21 and 226,628.15

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Solution

The fourth proportional to 396,390.47, 547,019.21 and 226,628.15 is: 312,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,390.47 : 547,019.21 = 226,628.15 : x
  2. Step 2: Convert to fraction form
    396,390.47/547,019.21 = 226,628.15/x
  3. Step 3: Cross multiply
    396,390.47x = 547,019.21 × 226,628.15
  4. Step 4: Simplify right side
    396,390.47x = 123,969,949,408.24
  5. Step 5: Solve for x
    x = 123,969,949,408.24/396,390.47
  6. Step 6: Final answer
    x = 312,747.05

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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.