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Finding the Fourth Proportional to 396,328.14, 546,932.10 and 215,040.04

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Solution

The fourth proportional to 396,328.14, 546,932.10 and 215,040.04 is: 296,754.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,328.14 : 546,932.10 = 215,040.04 : x
  2. Step 2: Convert to fraction form
    396,328.14/546,932.10 = 215,040.04/x
  3. Step 3: Cross multiply
    396,328.14x = 546,932.10 × 215,040.04
  4. Step 4: Simplify right side
    396,328.14x = 117,612,300,661.28
  5. Step 5: Solve for x
    x = 117,612,300,661.28/396,328.14
  6. Step 6: Final answer
    x = 296,754.86

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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.