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Finding the Fourth Proportional to 325,809.60, 488,325.60 and 136,269.60

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Solution

The fourth proportional to 325,809.60, 488,325.60 and 136,269.60 is: 204,241.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,809.60 : 488,325.60 = 136,269.60 : x
  2. Step 2: Convert to fraction form
    325,809.60/488,325.60 = 136,269.60/x
  3. Step 3: Cross multiply
    325,809.60x = 488,325.60 × 136,269.60
  4. Step 4: Simplify right side
    325,809.60x = 66,543,934,181.76
  5. Step 5: Solve for x
    x = 66,543,934,181.76/325,809.60
  6. Step 6: Final answer
    x = 204,241.78

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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.