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Finding the Fourth Proportional to 239,596.73, 330,749.76 and 154,755.17

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Solution

The fourth proportional to 239,596.73, 330,749.76 and 154,755.17 is: 213,630.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,596.73 : 330,749.76 = 154,755.17 : x
  2. Step 2: Convert to fraction form
    239,596.73/330,749.76 = 154,755.17/x
  3. Step 3: Cross multiply
    239,596.73x = 330,749.76 × 154,755.17
  4. Step 4: Simplify right side
    239,596.73x = 51,185,235,336.26
  5. Step 5: Solve for x
    x = 51,185,235,336.26/239,596.73
  6. Step 6: Final answer
    x = 213,630.78

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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.