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Finding the Fourth Proportional to 325,861.18, 488,825.48 and 89,203.78

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Solution

The fourth proportional to 325,861.18, 488,825.48 and 89,203.78 is: 133,814.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,861.18 : 488,825.48 = 89,203.78 : x
  2. Step 2: Convert to fraction form
    325,861.18/488,825.48 = 89,203.78/x
  3. Step 3: Cross multiply
    325,861.18x = 488,825.48 × 89,203.78
  4. Step 4: Simplify right side
    325,861.18x = 43,605,081,410.36
  5. Step 5: Solve for x
    x = 43,605,081,410.36/325,861.18
  6. Step 6: Final answer
    x = 133,814.90

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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.