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Finding the Fourth Proportional to 218,570.98, 327,827.75 and 68,812.05

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Solution

The fourth proportional to 218,570.98, 327,827.75 and 68,812.05 is: 103,209.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,570.98 : 327,827.75 = 68,812.05 : x
  2. Step 2: Convert to fraction form
    218,570.98/327,827.75 = 68,812.05/x
  3. Step 3: Cross multiply
    218,570.98x = 327,827.75 × 68,812.05
  4. Step 4: Simplify right side
    218,570.98x = 22,558,499,696.42
  5. Step 5: Solve for x
    x = 22,558,499,696.42/218,570.98
  6. Step 6: Final answer
    x = 103,209.04

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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.