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Finding the Fourth Proportional to 258,512.63, 356,747.43 and 151,172.85

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Solution

The fourth proportional to 258,512.63, 356,747.43 and 151,172.85 is: 208,618.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,512.63 : 356,747.43 = 151,172.85 : x
  2. Step 2: Convert to fraction form
    258,512.63/356,747.43 = 151,172.85/x
  3. Step 3: Cross multiply
    258,512.63x = 356,747.43 × 151,172.85
  4. Step 4: Simplify right side
    258,512.63x = 53,930,525,723.28
  5. Step 5: Solve for x
    x = 53,930,525,723.28/258,512.63
  6. Step 6: Final answer
    x = 208,618.54

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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.