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Finding the Fourth Proportional to 266,561.78, 399,863.33 and 89,069.42

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Solution

The fourth proportional to 266,561.78, 399,863.33 and 89,069.42 is: 133,611.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,561.78 : 399,863.33 = 89,069.42 : x
  2. Step 2: Convert to fraction form
    266,561.78/399,863.33 = 89,069.42/x
  3. Step 3: Cross multiply
    266,561.78x = 399,863.33 × 89,069.42
  4. Step 4: Simplify right side
    266,561.78x = 35,615,594,882.37
  5. Step 5: Solve for x
    x = 35,615,594,882.37/266,561.78
  6. Step 6: Final answer
    x = 133,611.03

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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.