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Finding the Fourth Proportional to 256,474.47, 353,977.81 and 173,650.88

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Solution

The fourth proportional to 256,474.47, 353,977.81 and 173,650.88 is: 239,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,474.47 : 353,977.81 = 173,650.88 : x
  2. Step 2: Convert to fraction form
    256,474.47/353,977.81 = 173,650.88/x
  3. Step 3: Cross multiply
    256,474.47x = 353,977.81 × 173,650.88
  4. Step 4: Simplify right side
    256,474.47x = 61,468,558,206.97
  5. Step 5: Solve for x
    x = 61,468,558,206.97/256,474.47
  6. Step 6: Final answer
    x = 239,667.36

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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.