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Finding the Fourth Proportional to 220,873.11, 330,655.17 and 136,361.55

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Solution

The fourth proportional to 220,873.11, 330,655.17 and 136,361.55 is: 204,138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,873.11 : 330,655.17 = 136,361.55 : x
  2. Step 2: Convert to fraction form
    220,873.11/330,655.17 = 136,361.55/x
  3. Step 3: Cross multiply
    220,873.11x = 330,655.17 × 136,361.55
  4. Step 4: Simplify right side
    220,873.11x = 45,088,651,496.71
  5. Step 5: Solve for x
    x = 45,088,651,496.71/220,873.11
  6. Step 6: Final answer
    x = 204,138.26

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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.