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Finding the Fourth Proportional to 221,785.49, 332,685.02 and 86,843.95

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Solution

The fourth proportional to 221,785.49, 332,685.02 and 86,843.95 is: 130,268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,785.49 : 332,685.02 = 86,843.95 : x
  2. Step 2: Convert to fraction form
    221,785.49/332,685.02 = 86,843.95/x
  3. Step 3: Cross multiply
    221,785.49x = 332,685.02 × 86,843.95
  4. Step 4: Simplify right side
    221,785.49x = 28,891,680,628.03
  5. Step 5: Solve for x
    x = 28,891,680,628.03/221,785.49
  6. Step 6: Final answer
    x = 130,268.58

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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.