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Finding the Fourth Proportional to 378,019.87, 566,940.22 and 108,139.68

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Solution

The fourth proportional to 378,019.87, 566,940.22 and 108,139.68 is: 162,183.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,019.87 : 566,940.22 = 108,139.68 : x
  2. Step 2: Convert to fraction form
    378,019.87/566,940.22 = 108,139.68/x
  3. Step 3: Cross multiply
    378,019.87x = 566,940.22 × 108,139.68
  4. Step 4: Simplify right side
    378,019.87x = 61,308,733,699.58
  5. Step 5: Solve for x
    x = 61,308,733,699.58/378,019.87
  6. Step 6: Final answer
    x = 162,183.89

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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.