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Finding the Fourth Proportional to 351,791.44, 527,679.77 and 85,553.35

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Solution

The fourth proportional to 351,791.44, 527,679.77 and 85,553.35 is: 128,328.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,791.44 : 527,679.77 = 85,553.35 : x
  2. Step 2: Convert to fraction form
    351,791.44/527,679.77 = 85,553.35/x
  3. Step 3: Cross multiply
    351,791.44x = 527,679.77 × 85,553.35
  4. Step 4: Simplify right side
    351,791.44x = 45,144,770,303.76
  5. Step 5: Solve for x
    x = 45,144,770,303.76/351,791.44
  6. Step 6: Final answer
    x = 128,328.22

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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.