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Finding the Fourth Proportional to 248,331, 343,045.26 and 221,464.92

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Solution

The fourth proportional to 248,331, 343,045.26 and 221,464.92 is: 305,932.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,331 : 343,045.26 = 221,464.92 : x
  2. Step 2: Convert to fraction form
    248,331/343,045.26 = 221,464.92/x
  3. Step 3: Cross multiply
    248,331x = 343,045.26 × 221,464.92
  4. Step 4: Simplify right side
    248,331x = 75,972,491,062.28
  5. Step 5: Solve for x
    x = 75,972,491,062.28/248,331
  6. Step 6: Final answer
    x = 305,932.37

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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.