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Finding the Fourth Proportional to 258,548.52, 387,822.78 and 81,069.82

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Solution

The fourth proportional to 258,548.52, 387,822.78 and 81,069.82 is: 121,604.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,548.52 : 387,822.78 = 81,069.82 : x
  2. Step 2: Convert to fraction form
    258,548.52/387,822.78 = 81,069.82/x
  3. Step 3: Cross multiply
    258,548.52x = 387,822.78 × 81,069.82
  4. Step 4: Simplify right side
    258,548.52x = 31,440,722,966.50
  5. Step 5: Solve for x
    x = 31,440,722,966.50/258,548.52
  6. Step 6: Final answer
    x = 121,604.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.