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Finding the Fourth Proportional to 256,658.30, 354,189.24 and 143,481.04

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Solution

The fourth proportional to 256,658.30, 354,189.24 and 143,481.04 is: 198,004.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,658.30 : 354,189.24 = 143,481.04 : x
  2. Step 2: Convert to fraction form
    256,658.30/354,189.24 = 143,481.04/x
  3. Step 3: Cross multiply
    256,658.30x = 354,189.24 × 143,481.04
  4. Step 4: Simplify right side
    256,658.30x = 50,819,440,512.01
  5. Step 5: Solve for x
    x = 50,819,440,512.01/256,658.30
  6. Step 6: Final answer
    x = 198,004.27

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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.