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Finding the Fourth Proportional to 203,769.54, 305,670.69 and 77,470.20

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Solution

The fourth proportional to 203,769.54, 305,670.69 and 77,470.20 is: 116,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,769.54 : 305,670.69 = 77,470.20 : x
  2. Step 2: Convert to fraction form
    203,769.54/305,670.69 = 77,470.20/x
  3. Step 3: Cross multiply
    203,769.54x = 305,670.69 × 77,470.20
  4. Step 4: Simplify right side
    203,769.54x = 23,680,369,488.44
  5. Step 5: Solve for x
    x = 23,680,369,488.44/203,769.54
  6. Step 6: Final answer
    x = 116,211.53

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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.