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Finding the Fourth Proportional to 258,732.91, 356,900.08 and 168,149.20

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Solution

The fourth proportional to 258,732.91, 356,900.08 and 168,149.20 is: 231,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,732.91 : 356,900.08 = 168,149.20 : x
  2. Step 2: Convert to fraction form
    258,732.91/356,900.08 = 168,149.20/x
  3. Step 3: Cross multiply
    258,732.91x = 356,900.08 × 168,149.20
  4. Step 4: Simplify right side
    258,732.91x = 60,012,463,429.63
  5. Step 5: Solve for x
    x = 60,012,463,429.63/258,732.91
  6. Step 6: Final answer
    x = 231,947.55

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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.