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Finding the Fourth Proportional to 485,059.56, 727,900.64 and 325,315.84

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Solution

The fourth proportional to 485,059.56, 727,900.64 and 325,315.84 is: 488,182.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,059.56 : 727,900.64 = 325,315.84 : x
  2. Step 2: Convert to fraction form
    485,059.56/727,900.64 = 325,315.84/x
  3. Step 3: Cross multiply
    485,059.56x = 727,900.64 × 325,315.84
  4. Step 4: Simplify right side
    485,059.56x = 236,797,608,138.14
  5. Step 5: Solve for x
    x = 236,797,608,138.14/485,059.56
  6. Step 6: Final answer
    x = 488,182.54

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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.