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Finding the Fourth Proportional to 518,620.89, 777,469.64 and 203,297.61

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Solution

The fourth proportional to 518,620.89, 777,469.64 and 203,297.61 is: 304,765.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,620.89 : 777,469.64 = 203,297.61 : x
  2. Step 2: Convert to fraction form
    518,620.89/777,469.64 = 203,297.61/x
  3. Step 3: Cross multiply
    518,620.89x = 777,469.64 × 203,297.61
  4. Step 4: Simplify right side
    518,620.89x = 158,057,718,643.07
  5. Step 5: Solve for x
    x = 158,057,718,643.07/518,620.89
  6. Step 6: Final answer
    x = 304,765.43

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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.