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Finding the Fourth Proportional to 515,963.10, 773,908.20 and 178,922.10

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Solution

The fourth proportional to 515,963.10, 773,908.20 and 178,922.10 is: 268,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,963.10 : 773,908.20 = 178,922.10 : x
  2. Step 2: Convert to fraction form
    515,963.10/773,908.20 = 178,922.10/x
  3. Step 3: Cross multiply
    515,963.10x = 773,908.20 × 178,922.10
  4. Step 4: Simplify right side
    515,963.10x = 138,469,280,351.22
  5. Step 5: Solve for x
    x = 138,469,280,351.22/515,963.10
  6. Step 6: Final answer
    x = 268,370.51

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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.