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Finding the Fourth Proportional to 351,779.82, 527,662.43 and 85,541.73

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Solution

The fourth proportional to 351,779.82, 527,662.43 and 85,541.73 is: 128,310.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,779.82 : 527,662.43 = 85,541.73 : x
  2. Step 2: Convert to fraction form
    351,779.82/527,662.43 = 85,541.73/x
  3. Step 3: Cross multiply
    351,779.82x = 527,662.43 × 85,541.73
  4. Step 4: Simplify right side
    351,779.82x = 45,137,157,118.20
  5. Step 5: Solve for x
    x = 45,137,157,118.20/351,779.82
  6. Step 6: Final answer
    x = 128,310.82

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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.