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Finding the Fourth Proportional to 321,257.52, 481,761.70 and 171,416.06

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Solution

The fourth proportional to 321,257.52, 481,761.70 and 171,416.06 is: 257,057.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,257.52 : 481,761.70 = 171,416.06 : x
  2. Step 2: Convert to fraction form
    321,257.52/481,761.70 = 171,416.06/x
  3. Step 3: Cross multiply
    321,257.52x = 481,761.70 × 171,416.06
  4. Step 4: Simplify right side
    321,257.52x = 82,581,692,472.90
  5. Step 5: Solve for x
    x = 82,581,692,472.90/321,257.52
  6. Step 6: Final answer
    x = 257,057.62

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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.