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Finding the Fourth Proportional to 518,960.68, 778,464.18 and 159,105.64

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Solution

The fourth proportional to 518,960.68, 778,464.18 and 159,105.64 is: 238,665.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,960.68 : 778,464.18 = 159,105.64 : x
  2. Step 2: Convert to fraction form
    518,960.68/778,464.18 = 159,105.64/x
  3. Step 3: Cross multiply
    518,960.68x = 778,464.18 × 159,105.64
  4. Step 4: Simplify right side
    518,960.68x = 123,858,041,575.98
  5. Step 5: Solve for x
    x = 123,858,041,575.98/518,960.68
  6. Step 6: Final answer
    x = 238,665.56

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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.