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Finding the Fourth Proportional to 240,065.81, 331,286.93 and 131,167.81

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Solution

The fourth proportional to 240,065.81, 331,286.93 and 131,167.81 is: 181,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,065.81 : 331,286.93 = 131,167.81 : x
  2. Step 2: Convert to fraction form
    240,065.81/331,286.93 = 131,167.81/x
  3. Step 3: Cross multiply
    240,065.81x = 331,286.93 × 131,167.81
  4. Step 4: Simplify right side
    240,065.81x = 43,454,181,089.72
  5. Step 5: Solve for x
    x = 43,454,181,089.72/240,065.81
  6. Step 6: Final answer
    x = 181,009.45

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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.