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Finding the Fourth Proportional to 505,418.73, 757,874.52 and 168,340.83

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Solution

The fourth proportional to 505,418.73, 757,874.52 and 168,340.83 is: 252,426.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,418.73 : 757,874.52 = 168,340.83 : x
  2. Step 2: Convert to fraction form
    505,418.73/757,874.52 = 168,340.83/x
  3. Step 3: Cross multiply
    505,418.73x = 757,874.52 × 168,340.83
  4. Step 4: Simplify right side
    505,418.73x = 127,581,225,732.65
  5. Step 5: Solve for x
    x = 127,581,225,732.65/505,418.73
  6. Step 6: Final answer
    x = 252,426.79

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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.