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Finding the Fourth Proportional to 260,955.92, 391,584.54 and 141,013.28

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Solution

The fourth proportional to 260,955.92, 391,584.54 and 141,013.28 is: 211,601.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,955.92 : 391,584.54 = 141,013.28 : x
  2. Step 2: Convert to fraction form
    260,955.92/391,584.54 = 141,013.28/x
  3. Step 3: Cross multiply
    260,955.92x = 391,584.54 × 141,013.28
  4. Step 4: Simplify right side
    260,955.92x = 55,218,620,382.69
  5. Step 5: Solve for x
    x = 55,218,620,382.69/260,955.92
  6. Step 6: Final answer
    x = 211,601.33

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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.