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Finding the Fourth Proportional to 290,576.16, 400,976.73 and 169,751.70

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Solution

The fourth proportional to 290,576.16, 400,976.73 and 169,751.70 is: 234,246.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,576.16 : 400,976.73 = 169,751.70 : x
  2. Step 2: Convert to fraction form
    290,576.16/400,976.73 = 169,751.70/x
  3. Step 3: Cross multiply
    290,576.16x = 400,976.73 × 169,751.70
  4. Step 4: Simplify right side
    290,576.16x = 68,066,481,577.94
  5. Step 5: Solve for x
    x = 68,066,481,577.94/290,576.16
  6. Step 6: Final answer
    x = 234,246.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.