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Finding the Fourth Proportional to 203,367.39, 280,663.80 and 112,751.79

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Solution

The fourth proportional to 203,367.39, 280,663.80 and 112,751.79 is: 155,606.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,367.39 : 280,663.80 = 112,751.79 : x
  2. Step 2: Convert to fraction form
    203,367.39/280,663.80 = 112,751.79/x
  3. Step 3: Cross multiply
    203,367.39x = 280,663.80 × 112,751.79
  4. Step 4: Simplify right side
    203,367.39x = 31,645,345,838.20
  5. Step 5: Solve for x
    x = 31,645,345,838.20/203,367.39
  6. Step 6: Final answer
    x = 155,606.79

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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.