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Finding the Fourth Proportional to 240,930.27, 332,474.79 and 138,960

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Solution

The fourth proportional to 240,930.27, 332,474.79 and 138,960 is: 191,759.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,930.27 : 332,474.79 = 138,960 : x
  2. Step 2: Convert to fraction form
    240,930.27/332,474.79 = 138,960/x
  3. Step 3: Cross multiply
    240,930.27x = 332,474.79 × 138,960
  4. Step 4: Simplify right side
    240,930.27x = 46,200,696,818.40
  5. Step 5: Solve for x
    x = 46,200,696,818.40/240,930.27
  6. Step 6: Final answer
    x = 191,759.62

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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.