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Finding the Fourth Proportional to 321,027.48, 481,278.38 and 121,234.44

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Solution

The fourth proportional to 321,027.48, 481,278.38 and 121,234.44 is: 181,752.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,027.48 : 481,278.38 = 121,234.44 : x
  2. Step 2: Convert to fraction form
    321,027.48/481,278.38 = 121,234.44/x
  3. Step 3: Cross multiply
    321,027.48x = 481,278.38 × 121,234.44
  4. Step 4: Simplify right side
    321,027.48x = 58,347,514,883.41
  5. Step 5: Solve for x
    x = 58,347,514,883.41/321,027.48
  6. Step 6: Final answer
    x = 181,752.40

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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.