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Finding the Fourth Proportional to 218,053.96, 327,207.83 and 91,685.05

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Solution

The fourth proportional to 218,053.96, 327,207.83 and 91,685.05 is: 137,580.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,053.96 : 327,207.83 = 91,685.05 : x
  2. Step 2: Convert to fraction form
    218,053.96/327,207.83 = 91,685.05/x
  3. Step 3: Cross multiply
    218,053.96x = 327,207.83 × 91,685.05
  4. Step 4: Simplify right side
    218,053.96x = 30,000,066,253.94
  5. Step 5: Solve for x
    x = 30,000,066,253.94/218,053.96
  6. Step 6: Final answer
    x = 137,580.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.