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Finding the Fourth Proportional to 449,992.28, 621,046.47 and 256,469.56

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Solution

The fourth proportional to 449,992.28, 621,046.47 and 256,469.56 is: 353,960.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,992.28 : 621,046.47 = 256,469.56 : x
  2. Step 2: Convert to fraction form
    449,992.28/621,046.47 = 256,469.56/x
  3. Step 3: Cross multiply
    449,992.28x = 621,046.47 × 256,469.56
  4. Step 4: Simplify right side
    449,992.28x = 159,279,514,309.60
  5. Step 5: Solve for x
    x = 159,279,514,309.60/449,992.28
  6. Step 6: Final answer
    x = 353,960.55

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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.