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Finding the Fourth Proportional to 258,495.44, 356,696.43 and 143,755.46

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Solution

The fourth proportional to 258,495.44, 356,696.43 and 143,755.46 is: 198,367.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,495.44 : 356,696.43 = 143,755.46 : x
  2. Step 2: Convert to fraction form
    258,495.44/356,696.43 = 143,755.46/x
  3. Step 3: Cross multiply
    258,495.44x = 356,696.43 × 143,755.46
  4. Step 4: Simplify right side
    258,495.44x = 51,277,059,375.01
  5. Step 5: Solve for x
    x = 51,277,059,375.01/258,495.44
  6. Step 6: Final answer
    x = 198,367.37

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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.