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Finding the Fourth Proportional to 218,997.28, 302,171.12 and 125,845.01

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Solution

The fourth proportional to 218,997.28, 302,171.12 and 125,845.01 is: 173,640.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,997.28 : 302,171.12 = 125,845.01 : x
  2. Step 2: Convert to fraction form
    218,997.28/302,171.12 = 125,845.01/x
  3. Step 3: Cross multiply
    218,997.28x = 302,171.12 × 125,845.01
  4. Step 4: Simplify right side
    218,997.28x = 38,026,726,107.26
  5. Step 5: Solve for x
    x = 38,026,726,107.26/218,997.28
  6. Step 6: Final answer
    x = 173,640.18

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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.