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Finding the Fourth Proportional to 201,708.78, 302,590.90 and 68,553.30

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Solution

The fourth proportional to 201,708.78, 302,590.90 and 68,553.30 is: 102,839.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,708.78 : 302,590.90 = 68,553.30 : x
  2. Step 2: Convert to fraction form
    201,708.78/302,590.90 = 68,553.30/x
  3. Step 3: Cross multiply
    201,708.78x = 302,590.90 × 68,553.30
  4. Step 4: Simplify right side
    201,708.78x = 20,743,604,744.97
  5. Step 5: Solve for x
    x = 20,743,604,744.97/201,708.78
  6. Step 6: Final answer
    x = 102,839.37

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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.