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Finding the Fourth Proportional to 258,351.05, 387,600.08 and 100,624.61

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Solution

The fourth proportional to 258,351.05, 387,600.08 and 100,624.61 is: 150,965.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,351.05 : 387,600.08 = 100,624.61 : x
  2. Step 2: Convert to fraction form
    258,351.05/387,600.08 = 100,624.61/x
  3. Step 3: Cross multiply
    258,351.05x = 387,600.08 × 100,624.61
  4. Step 4: Simplify right side
    258,351.05x = 39,002,104,444.85
  5. Step 5: Solve for x
    x = 39,002,104,444.85/258,351.05
  6. Step 6: Final answer
    x = 150,965.54

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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.