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Finding the Fourth Proportional to 309,889.97, 427,656.67 and 173,932.37

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Solution

The fourth proportional to 309,889.97, 427,656.67 and 173,932.37 is: 240,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,889.97 : 427,656.67 = 173,932.37 : x
  2. Step 2: Convert to fraction form
    309,889.97/427,656.67 = 173,932.37/x
  3. Step 3: Cross multiply
    309,889.97x = 427,656.67 × 173,932.37
  4. Step 4: Simplify right side
    309,889.97x = 74,383,335,586.29
  5. Step 5: Solve for x
    x = 74,383,335,586.29/309,889.97
  6. Step 6: Final answer
    x = 240,031.44

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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.