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Finding the Fourth Proportional to 258,614.76, 387,922.12 and 71,626.26

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Solution

The fourth proportional to 258,614.76, 387,922.12 and 71,626.26 is: 107,439.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,614.76 : 387,922.12 = 71,626.26 : x
  2. Step 2: Convert to fraction form
    258,614.76/387,922.12 = 71,626.26/x
  3. Step 3: Cross multiply
    258,614.76x = 387,922.12 × 71,626.26
  4. Step 4: Simplify right side
    258,614.76x = 27,785,410,626.87
  5. Step 5: Solve for x
    x = 27,785,410,626.87/258,614.76
  6. Step 6: Final answer
    x = 107,439.38

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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.