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Finding the Fourth Proportional to 269,930.42, 404,854.13 and 90,019

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Solution

The fourth proportional to 269,930.42, 404,854.13 and 90,019 is: 135,014.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,930.42 : 404,854.13 = 90,019 : x
  2. Step 2: Convert to fraction form
    269,930.42/404,854.13 = 90,019/x
  3. Step 3: Cross multiply
    269,930.42x = 404,854.13 × 90,019
  4. Step 4: Simplify right side
    269,930.42x = 36,444,563,928.47
  5. Step 5: Solve for x
    x = 36,444,563,928.47/269,930.42
  6. Step 6: Final answer
    x = 135,014.66

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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.