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Finding the Fourth Proportional to 258,654.73, 356,741.29 and 168,039.88

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Solution

The fourth proportional to 258,654.73, 356,741.29 and 168,039.88 is: 231,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,654.73 : 356,741.29 = 168,039.88 : x
  2. Step 2: Convert to fraction form
    258,654.73/356,741.29 = 168,039.88/x
  3. Step 3: Cross multiply
    258,654.73x = 356,741.29 × 168,039.88
  4. Step 4: Simplify right side
    258,654.73x = 59,946,763,562.65
  5. Step 5: Solve for x
    x = 59,946,763,562.65/258,654.73
  6. Step 6: Final answer
    x = 231,763.65

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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.