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Finding the Fourth Proportional to 351,883.56, 527,817.94 and 85,645.56

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Solution

The fourth proportional to 351,883.56, 527,817.94 and 85,645.56 is: 128,466.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,883.56 : 527,817.94 = 85,645.56 : x
  2. Step 2: Convert to fraction form
    351,883.56/527,817.94 = 85,645.56/x
  3. Step 3: Cross multiply
    351,883.56x = 527,817.94 × 85,645.56
  4. Step 4: Simplify right side
    351,883.56x = 45,205,263,049.35
  5. Step 5: Solve for x
    x = 45,205,263,049.35/351,883.56
  6. Step 6: Final answer
    x = 128,466.54

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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.