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Finding the Fourth Proportional to 351,369.22, 527,052 and 85,129.78

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Solution

The fourth proportional to 351,369.22, 527,052 and 85,129.78 is: 127,694.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,369.22 : 527,052 = 85,129.78 : x
  2. Step 2: Convert to fraction form
    351,369.22/527,052 = 85,129.78/x
  3. Step 3: Cross multiply
    351,369.22x = 527,052 × 85,129.78
  4. Step 4: Simplify right side
    351,369.22x = 44,867,820,808.56
  5. Step 5: Solve for x
    x = 44,867,820,808.56/351,369.22
  6. Step 6: Final answer
    x = 127,694.23

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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.