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Finding the Fourth Proportional to 518,115.96, 777,504.66 and 251,731.24

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Solution

The fourth proportional to 518,115.96, 777,504.66 and 251,731.24 is: 377,757.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,115.96 : 777,504.66 = 251,731.24 : x
  2. Step 2: Convert to fraction form
    518,115.96/777,504.66 = 251,731.24/x
  3. Step 3: Cross multiply
    518,115.96x = 777,504.66 × 251,731.24
  4. Step 4: Simplify right side
    518,115.96x = 195,722,212,167.58
  5. Step 5: Solve for x
    x = 195,722,212,167.58/518,115.96
  6. Step 6: Final answer
    x = 377,757.54

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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.