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Finding the Fourth Proportional to 216,527.31, 324,770.07 and 66,727.38

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Solution

The fourth proportional to 216,527.31, 324,770.07 and 66,727.38 is: 100,084.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,527.31 : 324,770.07 = 66,727.38 : x
  2. Step 2: Convert to fraction form
    216,527.31/324,770.07 = 66,727.38/x
  3. Step 3: Cross multiply
    216,527.31x = 324,770.07 × 66,727.38
  4. Step 4: Simplify right side
    216,527.31x = 21,671,055,873.52
  5. Step 5: Solve for x
    x = 21,671,055,873.52/216,527.31
  6. Step 6: Final answer
    x = 100,084.63

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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.