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Finding the Fourth Proportional to 220,651.28, 304,489.14 and 122,528.48

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Solution

The fourth proportional to 220,651.28, 304,489.14 and 122,528.48 is: 169,083.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,651.28 : 304,489.14 = 122,528.48 : x
  2. Step 2: Convert to fraction form
    220,651.28/304,489.14 = 122,528.48/x
  3. Step 3: Cross multiply
    220,651.28x = 304,489.14 × 122,528.48
  4. Step 4: Simplify right side
    220,651.28x = 37,308,591,500.71
  5. Step 5: Solve for x
    x = 37,308,591,500.71/220,651.28
  6. Step 6: Final answer
    x = 169,083.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.