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Finding the Fourth Proportional to 220,643.20, 330,852.48 and 108,331.84

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Solution

The fourth proportional to 220,643.20, 330,852.48 and 108,331.84 is: 162,442.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,643.20 : 330,852.48 = 108,331.84 : x
  2. Step 2: Convert to fraction form
    220,643.20/330,852.48 = 108,331.84/x
  3. Step 3: Cross multiply
    220,643.20x = 330,852.48 × 108,331.84
  4. Step 4: Simplify right side
    220,643.20x = 35,841,857,926.96
  5. Step 5: Solve for x
    x = 35,841,857,926.96/220,643.20
  6. Step 6: Final answer
    x = 162,442.61

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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.