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Finding the Fourth Proportional to 325,800.87, 488,723.17 and 89,145.60

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Solution

The fourth proportional to 325,800.87, 488,723.17 and 89,145.60 is: 133,724.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,800.87 : 488,723.17 = 89,145.60 : x
  2. Step 2: Convert to fraction form
    325,800.87/488,723.17 = 89,145.60/x
  3. Step 3: Cross multiply
    325,800.87x = 488,723.17 × 89,145.60
  4. Step 4: Simplify right side
    325,800.87x = 43,567,520,223.55
  5. Step 5: Solve for x
    x = 43,567,520,223.55/325,800.87
  6. Step 6: Final answer
    x = 133,724.38

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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.