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Finding the Fourth Proportional to 401,344.70, 601,640.39 and 134,918.89

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Solution

The fourth proportional to 401,344.70, 601,640.39 and 134,918.89 is: 202,251.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,344.70 : 601,640.39 = 134,918.89 : x
  2. Step 2: Convert to fraction form
    401,344.70/601,640.39 = 134,918.89/x
  3. Step 3: Cross multiply
    401,344.70x = 601,640.39 × 134,918.89
  4. Step 4: Simplify right side
    401,344.70x = 81,172,652,431.16
  5. Step 5: Solve for x
    x = 81,172,652,431.16/401,344.70
  6. Step 6: Final answer
    x = 202,251.71

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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.