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Finding the Fourth Proportional to 256,481.28, 353,936.93 and 143,304.03

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Solution

The fourth proportional to 256,481.28, 353,936.93 and 143,304.03 is: 197,755.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,481.28 : 353,936.93 = 143,304.03 : x
  2. Step 2: Convert to fraction form
    256,481.28/353,936.93 = 143,304.03/x
  3. Step 3: Cross multiply
    256,481.28x = 353,936.93 × 143,304.03
  4. Step 4: Simplify right side
    256,481.28x = 50,720,587,718.31
  5. Step 5: Solve for x
    x = 50,720,587,718.31/256,481.28
  6. Step 6: Final answer
    x = 197,755.52

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1.5x scale

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.