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Finding the Fourth Proportional to 339,373.80, 509,171.42 and 161,857.74

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Solution

The fourth proportional to 339,373.80, 509,171.42 and 161,857.74 is: 242,839.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,373.80 : 509,171.42 = 161,857.74 : x
  2. Step 2: Convert to fraction form
    339,373.80/509,171.42 = 161,857.74/x
  3. Step 3: Cross multiply
    339,373.80x = 509,171.42 × 161,857.74
  4. Step 4: Simplify right side
    339,373.80x = 82,413,336,717.38
  5. Step 5: Solve for x
    x = 82,413,336,717.38/339,373.80
  6. Step 6: Final answer
    x = 242,839.42

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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.