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Finding the Fourth Proportional to 396,632.41, 547,349.60 and 215,340.71

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Solution

The fourth proportional to 396,632.41, 547,349.60 and 215,340.71 is: 297,168.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,632.41 : 547,349.60 = 215,340.71 : x
  2. Step 2: Convert to fraction form
    396,632.41/547,349.60 = 215,340.71/x
  3. Step 3: Cross multiply
    396,632.41x = 547,349.60 × 215,340.71
  4. Step 4: Simplify right side
    396,632.41x = 117,866,649,283.82
  5. Step 5: Solve for x
    x = 117,866,649,283.82/396,632.41
  6. Step 6: Final answer
    x = 297,168.48

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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.