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Finding the Fourth Proportional to 426,074.70, 638,626.38 and 266,224.44

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Solution

The fourth proportional to 426,074.70, 638,626.38 and 266,224.44 is: 399,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,074.70 : 638,626.38 = 266,224.44 : x
  2. Step 2: Convert to fraction form
    426,074.70/638,626.38 = 266,224.44/x
  3. Step 3: Cross multiply
    426,074.70x = 638,626.38 × 266,224.44
  4. Step 4: Simplify right side
    426,074.70x = 170,017,950,384.73
  5. Step 5: Solve for x
    x = 170,017,950,384.73/426,074.70
  6. Step 6: Final answer
    x = 399,033.20

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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.