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Finding the Fourth Proportional to 286,408.04, 428,958.08 and 136,753.38

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Solution

The fourth proportional to 286,408.04, 428,958.08 and 136,753.38 is: 204,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,408.04 : 428,958.08 = 136,753.38 : x
  2. Step 2: Convert to fraction form
    286,408.04/428,958.08 = 136,753.38/x
  3. Step 3: Cross multiply
    286,408.04x = 428,958.08 × 136,753.38
  4. Step 4: Simplify right side
    286,408.04x = 58,661,467,147.37
  5. Step 5: Solve for x
    x = 58,661,467,147.37/286,408.04
  6. Step 6: Final answer
    x = 204,817.81

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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.