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Finding the Fourth Proportional to 203,301.89, 280,558.25 and 112,659.36

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Solution

The fourth proportional to 203,301.89, 280,558.25 and 112,659.36 is: 155,470.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,301.89 : 280,558.25 = 112,659.36 : x
  2. Step 2: Convert to fraction form
    203,301.89/280,558.25 = 112,659.36/x
  3. Step 3: Cross multiply
    203,301.89x = 280,558.25 × 112,659.36
  4. Step 4: Simplify right side
    203,301.89x = 31,607,512,887.72
  5. Step 5: Solve for x
    x = 31,607,512,887.72/203,301.89
  6. Step 6: Final answer
    x = 155,470.83

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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.