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Finding the Fourth Proportional to 515,441.67, 772,851.76 and 231,080.79

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Solution

The fourth proportional to 515,441.67, 772,851.76 and 231,080.79 is: 346,481.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,441.67 : 772,851.76 = 231,080.79 : x
  2. Step 2: Convert to fraction form
    515,441.67/772,851.76 = 231,080.79/x
  3. Step 3: Cross multiply
    515,441.67x = 772,851.76 × 231,080.79
  4. Step 4: Simplify right side
    515,441.67x = 178,591,195,253.69
  5. Step 5: Solve for x
    x = 178,591,195,253.69/515,441.67
  6. Step 6: Final answer
    x = 346,481.87

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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.