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Finding the Fourth Proportional to 425,679.68, 587,540.32 and 255,881

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Solution

The fourth proportional to 425,679.68, 587,540.32 and 255,881 is: 353,177.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,679.68 : 587,540.32 = 255,881 : x
  2. Step 2: Convert to fraction form
    425,679.68/587,540.32 = 255,881/x
  3. Step 3: Cross multiply
    425,679.68x = 587,540.32 × 255,881
  4. Step 4: Simplify right side
    425,679.68x = 150,340,404,621.92
  5. Step 5: Solve for x
    x = 150,340,404,621.92/425,679.68
  6. Step 6: Final answer
    x = 353,177.31

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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.