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Finding the Fourth Proportional to 217,887.84, 326,957.04 and 91,517.04

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Solution

The fourth proportional to 217,887.84, 326,957.04 and 91,517.04 is: 137,328.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,887.84 : 326,957.04 = 91,517.04 : x
  2. Step 2: Convert to fraction form
    217,887.84/326,957.04 = 91,517.04/x
  3. Step 3: Cross multiply
    217,887.84x = 326,957.04 × 91,517.04
  4. Step 4: Simplify right side
    217,887.84x = 29,922,140,507.96
  5. Step 5: Solve for x
    x = 29,922,140,507.96/217,887.84
  6. Step 6: Final answer
    x = 137,328.18

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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.