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Finding the Fourth Proportional to 396,282.93, 546,930.48 and 253,138.32

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Solution

The fourth proportional to 396,282.93, 546,930.48 and 253,138.32 is: 349,369.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,282.93 : 546,930.48 = 253,138.32 : x
  2. Step 2: Convert to fraction form
    396,282.93/546,930.48 = 253,138.32/x
  3. Step 3: Cross multiply
    396,282.93x = 546,930.48 × 253,138.32
  4. Step 4: Simplify right side
    396,282.93x = 138,449,062,863.99
  5. Step 5: Solve for x
    x = 138,449,062,863.99/396,282.93
  6. Step 6: Final answer
    x = 349,369.23

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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.