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Finding the Fourth Proportional to 378,288.06, 567,515.07 and 112,069.38

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Solution

The fourth proportional to 378,288.06, 567,515.07 and 112,069.38 is: 168,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,288.06 : 567,515.07 = 112,069.38 : x
  2. Step 2: Convert to fraction form
    378,288.06/567,515.07 = 112,069.38/x
  3. Step 3: Cross multiply
    378,288.06x = 567,515.07 × 112,069.38
  4. Step 4: Simplify right side
    378,288.06x = 63,601,062,035.56
  5. Step 5: Solve for x
    x = 63,601,062,035.56/378,288.06
  6. Step 6: Final answer
    x = 168,128.65

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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.