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Finding the Fourth Proportional to 218,020.68, 327,123.96 and 84,994.56

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Solution

The fourth proportional to 218,020.68, 327,123.96 and 84,994.56 is: 127,528.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,020.68 : 327,123.96 = 84,994.56 : x
  2. Step 2: Convert to fraction form
    218,020.68/327,123.96 = 84,994.56/x
  3. Step 3: Cross multiply
    218,020.68x = 327,123.96 × 84,994.56
  4. Step 4: Simplify right side
    218,020.68x = 27,803,757,045.66
  5. Step 5: Solve for x
    x = 27,803,757,045.66/218,020.68
  6. Step 6: Final answer
    x = 127,528.07

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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.