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Finding the Fourth Proportional to 351,485.78, 527,243.25 and 102,167.78

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Solution

The fourth proportional to 351,485.78, 527,243.25 and 102,167.78 is: 153,255.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,485.78 : 527,243.25 = 102,167.78 : x
  2. Step 2: Convert to fraction form
    351,485.78/527,243.25 = 102,167.78/x
  3. Step 3: Cross multiply
    351,485.78x = 527,243.25 × 102,167.78
  4. Step 4: Simplify right side
    351,485.78x = 53,867,272,372.49
  5. Step 5: Solve for x
    x = 53,867,272,372.49/351,485.78
  6. Step 6: Final answer
    x = 153,255.91

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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.