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Finding the Fourth Proportional to 323,725.60, 485,442.60 and 123,979.60

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Solution

The fourth proportional to 323,725.60, 485,442.60 and 123,979.60 is: 185,913.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,725.60 : 485,442.60 = 123,979.60 : x
  2. Step 2: Convert to fraction form
    323,725.60/485,442.60 = 123,979.60/x
  3. Step 3: Cross multiply
    323,725.60x = 485,442.60 × 123,979.60
  4. Step 4: Simplify right side
    323,725.60x = 60,184,979,370.96
  5. Step 5: Solve for x
    x = 60,184,979,370.96/323,725.60
  6. Step 6: Final answer
    x = 185,913.56

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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.