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Finding the Fourth Proportional to 243,299.45, 335,749.88 and 141,382.51

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Solution

The fourth proportional to 243,299.45, 335,749.88 and 141,382.51 is: 195,105.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,299.45 : 335,749.88 = 141,382.51 : x
  2. Step 2: Convert to fraction form
    243,299.45/335,749.88 = 141,382.51/x
  3. Step 3: Cross multiply
    243,299.45x = 335,749.88 × 141,382.51
  4. Step 4: Simplify right side
    243,299.45x = 47,469,160,280.68
  5. Step 5: Solve for x
    x = 47,469,160,280.68/243,299.45
  6. Step 6: Final answer
    x = 195,105.91

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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.