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Finding the Fourth Proportional to 285,557.78, 394,069.73 and 158,233.37

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Solution

The fourth proportional to 285,557.78, 394,069.73 and 158,233.37 is: 218,362.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,557.78 : 394,069.73 = 158,233.37 : x
  2. Step 2: Convert to fraction form
    285,557.78/394,069.73 = 158,233.37/x
  3. Step 3: Cross multiply
    285,557.78x = 394,069.73 × 158,233.37
  4. Step 4: Simplify right side
    285,557.78x = 62,354,978,631.37
  5. Step 5: Solve for x
    x = 62,354,978,631.37/285,557.78
  6. Step 6: Final answer
    x = 218,362.04

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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.