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Finding the Fourth Proportional to 203,930.57, 305,926.97 and 104,036.28

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Solution

The fourth proportional to 203,930.57, 305,926.97 and 104,036.28 is: 156,070.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,930.57 : 305,926.97 = 104,036.28 : x
  2. Step 2: Convert to fraction form
    203,930.57/305,926.97 = 104,036.28/x
  3. Step 3: Cross multiply
    203,930.57x = 305,926.97 × 104,036.28
  4. Step 4: Simplify right side
    203,930.57x = 31,827,503,390.29
  5. Step 5: Solve for x
    x = 31,827,503,390.29/203,930.57
  6. Step 6: Final answer
    x = 156,070.29

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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.