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Finding the Fourth Proportional to 425,363.41, 638,103.44 and 188,700.85

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Solution

The fourth proportional to 425,363.41, 638,103.44 and 188,700.85 is: 283,077.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,363.41 : 638,103.44 = 188,700.85 : x
  2. Step 2: Convert to fraction form
    425,363.41/638,103.44 = 188,700.85/x
  3. Step 3: Cross multiply
    425,363.41x = 638,103.44 × 188,700.85
  4. Step 4: Simplify right side
    425,363.41x = 120,410,661,515.92
  5. Step 5: Solve for x
    x = 120,410,661,515.92/425,363.41
  6. Step 6: Final answer
    x = 283,077.15

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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.