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Finding the Fourth Proportional to 325,798.87, 488,720.17 and 89,143.60

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Solution

The fourth proportional to 325,798.87, 488,720.17 and 89,143.60 is: 133,721.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,798.87 : 488,720.17 = 89,143.60 : x
  2. Step 2: Convert to fraction form
    325,798.87/488,720.17 = 89,143.60/x
  3. Step 3: Cross multiply
    325,798.87x = 488,720.17 × 89,143.60
  4. Step 4: Simplify right side
    325,798.87x = 43,566,274,028.58
  5. Step 5: Solve for x
    x = 43,566,274,028.58/325,798.87
  6. Step 6: Final answer
    x = 133,721.38

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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.