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Finding the Fourth Proportional to 203,593.45, 305,489.54 and 144,004.79

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Solution

The fourth proportional to 203,593.45, 305,489.54 and 144,004.79 is: 216,077.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,593.45 : 305,489.54 = 144,004.79 : x
  2. Step 2: Convert to fraction form
    203,593.45/305,489.54 = 144,004.79/x
  3. Step 3: Cross multiply
    203,593.45x = 305,489.54 × 144,004.79
  4. Step 4: Simplify right side
    203,593.45x = 43,991,955,571.15
  5. Step 5: Solve for x
    x = 43,991,955,571.15/203,593.45
  6. Step 6: Final answer
    x = 216,077.46

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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.