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Finding the Fourth Proportional to 425,707.43, 587,578.61 and 255,908.75

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Solution

The fourth proportional to 425,707.43, 587,578.61 and 255,908.75 is: 353,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,707.43 : 587,578.61 = 255,908.75 : x
  2. Step 2: Convert to fraction form
    425,707.43/587,578.61 = 255,908.75/x
  3. Step 3: Cross multiply
    425,707.43x = 587,578.61 × 255,908.75
  4. Step 4: Simplify right side
    425,707.43x = 150,366,507,611.84
  5. Step 5: Solve for x
    x = 150,366,507,611.84/425,707.43
  6. Step 6: Final answer
    x = 353,215.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.