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Finding the Fourth Proportional to 325,942.70, 488,914.47 and 89,287.46

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Solution

The fourth proportional to 325,942.70, 488,914.47 and 89,287.46 is: 133,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,942.70 : 488,914.47 = 89,287.46 : x
  2. Step 2: Convert to fraction form
    325,942.70/488,914.47 = 89,287.46/x
  3. Step 3: Cross multiply
    325,942.70x = 488,914.47 × 89,287.46
  4. Step 4: Simplify right side
    325,942.70x = 43,653,931,183.55
  5. Step 5: Solve for x
    x = 43,653,931,183.55/325,942.70
  6. Step 6: Final answer
    x = 133,931.31

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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.