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Finding the Fourth Proportional to 325,260.46, 487,627.64 and 135,865.88

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Solution

The fourth proportional to 325,260.46, 487,627.64 and 135,865.88 is: 203,688.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,260.46 : 487,627.64 = 135,865.88 : x
  2. Step 2: Convert to fraction form
    325,260.46/487,627.64 = 135,865.88/x
  3. Step 3: Cross multiply
    325,260.46x = 487,627.64 × 135,865.88
  4. Step 4: Simplify right side
    325,260.46x = 66,251,959,777.25
  5. Step 5: Solve for x
    x = 66,251,959,777.25/325,260.46
  6. Step 6: Final answer
    x = 203,688.94

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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.