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Finding the Fourth Proportional to 321,757.56, 482,636.46 and 111,280.68

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Solution

The fourth proportional to 321,757.56, 482,636.46 and 111,280.68 is: 166,921.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,757.56 : 482,636.46 = 111,280.68 : x
  2. Step 2: Convert to fraction form
    321,757.56/482,636.46 = 111,280.68/x
  3. Step 3: Cross multiply
    321,757.56x = 482,636.46 × 111,280.68
  4. Step 4: Simplify right side
    321,757.56x = 53,708,113,461.59
  5. Step 5: Solve for x
    x = 53,708,113,461.59/321,757.56
  6. Step 6: Final answer
    x = 166,921.06

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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.