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Finding the Fourth Proportional to 217,418.34, 300,040.29 and 131,365.29

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Solution

The fourth proportional to 217,418.34, 300,040.29 and 131,365.29 is: 181,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,418.34 : 300,040.29 = 131,365.29 : x
  2. Step 2: Convert to fraction form
    217,418.34/300,040.29 = 131,365.29/x
  3. Step 3: Cross multiply
    217,418.34x = 300,040.29 × 131,365.29
  4. Step 4: Simplify right side
    217,418.34x = 39,414,879,707.53
  5. Step 5: Solve for x
    x = 39,414,879,707.53/217,418.34
  6. Step 6: Final answer
    x = 181,285.90

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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.