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Finding the Fourth Proportional to 234,887.81, 324,141.71 and 138,102.57

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Solution

The fourth proportional to 234,887.81, 324,141.71 and 138,102.57 is: 190,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,887.81 : 324,141.71 = 138,102.57 : x
  2. Step 2: Convert to fraction form
    234,887.81/324,141.71 = 138,102.57/x
  3. Step 3: Cross multiply
    234,887.81x = 324,141.71 × 138,102.57
  4. Step 4: Simplify right side
    234,887.81x = 44,764,802,504.68
  5. Step 5: Solve for x
    x = 44,764,802,504.68/234,887.81
  6. Step 6: Final answer
    x = 190,579.51

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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.