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Finding the Fourth Proportional to 217,376.31, 299,951.60 and 126,709.59

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Solution

The fourth proportional to 217,376.31, 299,951.60 and 126,709.59 is: 174,843.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,376.31 : 299,951.60 = 126,709.59 : x
  2. Step 2: Convert to fraction form
    217,376.31/299,951.60 = 126,709.59/x
  3. Step 3: Cross multiply
    217,376.31x = 299,951.60 × 126,709.59
  4. Step 4: Simplify right side
    217,376.31x = 38,006,743,622.30
  5. Step 5: Solve for x
    x = 38,006,743,622.30/217,376.31
  6. Step 6: Final answer
    x = 174,843.08

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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.