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Finding the Fourth Proportional to 255,755.72, 352,934.79 and 141,039.20

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Solution

The fourth proportional to 255,755.72, 352,934.79 and 141,039.20 is: 194,629.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,755.72 : 352,934.79 = 141,039.20 : x
  2. Step 2: Convert to fraction form
    255,755.72/352,934.79 = 141,039.20/x
  3. Step 3: Cross multiply
    255,755.72x = 352,934.79 × 141,039.20
  4. Step 4: Simplify right side
    255,755.72x = 49,777,638,669.09
  5. Step 5: Solve for x
    x = 49,777,638,669.09/255,755.72
  6. Step 6: Final answer
    x = 194,629.62

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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.