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Finding the Fourth Proportional to 425,677.68, 587,537.55 and 255,879

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Solution

The fourth proportional to 425,677.68, 587,537.55 and 255,879 is: 353,174.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,677.68 : 587,537.55 = 255,879 : x
  2. Step 2: Convert to fraction form
    425,677.68/587,537.55 = 255,879/x
  3. Step 3: Cross multiply
    425,677.68x = 587,537.55 × 255,879
  4. Step 4: Simplify right side
    425,677.68x = 150,338,520,756.45
  5. Step 5: Solve for x
    x = 150,338,520,756.45/425,677.68
  6. Step 6: Final answer
    x = 353,174.54

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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.