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Finding the Fourth Proportional to 329,754.28, 494,288.48 and 127,489.31

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Solution

The fourth proportional to 329,754.28, 494,288.48 and 127,489.31 is: 191,101.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,754.28 : 494,288.48 = 127,489.31 : x
  2. Step 2: Convert to fraction form
    329,754.28/494,288.48 = 127,489.31/x
  3. Step 3: Cross multiply
    329,754.28x = 494,288.48 × 127,489.31
  4. Step 4: Simplify right side
    329,754.28x = 63,016,495,040.00
  5. Step 5: Solve for x
    x = 63,016,495,040.00/329,754.28
  6. Step 6: Final answer
    x = 191,101.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.