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Finding the Fourth Proportional to 203,371.36, 280,657.44 and 111,495.89

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Solution

The fourth proportional to 203,371.36, 280,657.44 and 111,495.89 is: 153,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,371.36 : 280,657.44 = 111,495.89 : x
  2. Step 2: Convert to fraction form
    203,371.36/280,657.44 = 111,495.89/x
  3. Step 3: Cross multiply
    203,371.36x = 280,657.44 × 111,495.89
  4. Step 4: Simplify right side
    203,371.36x = 31,292,151,759.57
  5. Step 5: Solve for x
    x = 31,292,151,759.57/203,371.36
  6. Step 6: Final answer
    x = 153,867.05

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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.