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Finding the Fourth Proportional to 243,687.86, 335,958.54 and 170,991.98

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Solution

The fourth proportional to 243,687.86, 335,958.54 and 170,991.98 is: 235,736.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,687.86 : 335,958.54 = 170,991.98 : x
  2. Step 2: Convert to fraction form
    243,687.86/335,958.54 = 170,991.98/x
  3. Step 3: Cross multiply
    243,687.86x = 335,958.54 × 170,991.98
  4. Step 4: Simplify right side
    243,687.86x = 57,446,215,952.51
  5. Step 5: Solve for x
    x = 57,446,215,952.51/243,687.86
  6. Step 6: Final answer
    x = 235,736.88

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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.