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Finding the Fourth Proportional to 216,753.39, 325,188.52 and 90,351.62

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Solution

The fourth proportional to 216,753.39, 325,188.52 and 90,351.62 is: 135,551.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,753.39 : 325,188.52 = 90,351.62 : x
  2. Step 2: Convert to fraction form
    216,753.39/325,188.52 = 90,351.62/x
  3. Step 3: Cross multiply
    216,753.39x = 325,188.52 × 90,351.62
  4. Step 4: Simplify right side
    216,753.39x = 29,381,309,135.64
  5. Step 5: Solve for x
    x = 29,381,309,135.64/216,753.39
  6. Step 6: Final answer
    x = 135,551.79

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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.