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Finding the Fourth Proportional to 325,073.73, 487,489.34 and 111,781.31

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Solution

The fourth proportional to 325,073.73, 487,489.34 and 111,781.31 is: 167,630.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,073.73 : 487,489.34 = 111,781.31 : x
  2. Step 2: Convert to fraction form
    325,073.73/487,489.34 = 111,781.31/x
  3. Step 3: Cross multiply
    325,073.73x = 487,489.34 × 111,781.31
  4. Step 4: Simplify right side
    325,073.73x = 54,492,194,039.88
  5. Step 5: Solve for x
    x = 54,492,194,039.88/325,073.73
  6. Step 6: Final answer
    x = 167,630.26

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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.