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Finding the Fourth Proportional to 258,233.98, 387,373.30 and 71,245.48

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Solution

The fourth proportional to 258,233.98, 387,373.30 and 71,245.48 is: 106,874.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,233.98 : 387,373.30 = 71,245.48 : x
  2. Step 2: Convert to fraction form
    258,233.98/387,373.30 = 71,245.48/x
  3. Step 3: Cross multiply
    258,233.98x = 387,373.30 × 71,245.48
  4. Step 4: Simplify right side
    258,233.98x = 27,598,596,697.68
  5. Step 5: Solve for x
    x = 27,598,596,697.68/258,233.98
  6. Step 6: Final answer
    x = 106,874.38

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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.