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Finding the Fourth Proportional to 243,288.86, 335,896.60 and 217,751

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Solution

The fourth proportional to 243,288.86, 335,896.60 and 217,751 is: 300,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,288.86 : 335,896.60 = 217,751 : x
  2. Step 2: Convert to fraction form
    243,288.86/335,896.60 = 217,751/x
  3. Step 3: Cross multiply
    243,288.86x = 335,896.60 × 217,751
  4. Step 4: Simplify right side
    243,288.86x = 73,141,820,546.60
  5. Step 5: Solve for x
    x = 73,141,820,546.60/243,288.86
  6. Step 6: Final answer
    x = 300,637.77

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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.