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Finding the Fourth Proportional to 426,269.56, 638,583.66 and 266,407.96

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Solution

The fourth proportional to 426,269.56, 638,583.66 and 266,407.96 is: 399,099.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,269.56 : 638,583.66 = 266,407.96 : x
  2. Step 2: Convert to fraction form
    426,269.56/638,583.66 = 266,407.96/x
  3. Step 3: Cross multiply
    426,269.56x = 638,583.66 × 266,407.96
  4. Step 4: Simplify right side
    426,269.56x = 170,123,770,149.93
  5. Step 5: Solve for x
    x = 170,123,770,149.93/426,269.56
  6. Step 6: Final answer
    x = 399,099.04

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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.