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Finding the Fourth Proportional to 221,796.80, 332,176.80 and 217,342.40

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Solution

The fourth proportional to 221,796.80, 332,176.80 and 217,342.40 is: 325,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,796.80 : 332,176.80 = 217,342.40 : x
  2. Step 2: Convert to fraction form
    221,796.80/332,176.80 = 217,342.40/x
  3. Step 3: Cross multiply
    221,796.80x = 332,176.80 × 217,342.40
  4. Step 4: Simplify right side
    221,796.80x = 72,196,102,936.32
  5. Step 5: Solve for x
    x = 72,196,102,936.32/221,796.80
  6. Step 6: Final answer
    x = 325,505.61

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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.