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Finding the Fourth Proportional to 258,127.70, 387,290.84 and 124,997.72

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Solution

The fourth proportional to 258,127.70, 387,290.84 and 124,997.72 is: 187,544.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,127.70 : 387,290.84 = 124,997.72 : x
  2. Step 2: Convert to fraction form
    258,127.70/387,290.84 = 124,997.72/x
  3. Step 3: Cross multiply
    258,127.70x = 387,290.84 × 124,997.72
  4. Step 4: Simplify right side
    258,127.70x = 48,410,469,415.44
  5. Step 5: Solve for x
    x = 48,410,469,415.44/258,127.70
  6. Step 6: Final answer
    x = 187,544.65

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1.5x scale

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.