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Finding the Fourth Proportional to 218,050.70, 327,202.95 and 91,681.79

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Solution

The fourth proportional to 218,050.70, 327,202.95 and 91,681.79 is: 137,576.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,050.70 : 327,202.95 = 91,681.79 : x
  2. Step 2: Convert to fraction form
    218,050.70/327,202.95 = 91,681.79/x
  3. Step 3: Cross multiply
    218,050.70x = 327,202.95 × 91,681.79
  4. Step 4: Simplify right side
    218,050.70x = 29,998,553,311.09
  5. Step 5: Solve for x
    x = 29,998,553,311.09/218,050.70
  6. Step 6: Final answer
    x = 137,576.05

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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.