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Finding the Fourth Proportional to 320,687.15, 481,105.52 and 92,987.51

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Solution

The fourth proportional to 320,687.15, 481,105.52 and 92,987.51 is: 139,502.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,687.15 : 481,105.52 = 92,987.51 : x
  2. Step 2: Convert to fraction form
    320,687.15/481,105.52 = 92,987.51/x
  3. Step 3: Cross multiply
    320,687.15x = 481,105.52 × 92,987.51
  4. Step 4: Simplify right side
    320,687.15x = 44,736,801,481.59
  5. Step 5: Solve for x
    x = 44,736,801,481.59/320,687.15
  6. Step 6: Final answer
    x = 139,502.95

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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.