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Finding the Fourth Proportional to 262,520.05, 393,842.81 and 85,027.27

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Solution

The fourth proportional to 262,520.05, 393,842.81 and 85,027.27 is: 127,561.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,520.05 : 393,842.81 = 85,027.27 : x
  2. Step 2: Convert to fraction form
    262,520.05/393,842.81 = 85,027.27/x
  3. Step 3: Cross multiply
    262,520.05x = 393,842.81 × 85,027.27
  4. Step 4: Simplify right side
    262,520.05x = 33,487,378,943.43
  5. Step 5: Solve for x
    x = 33,487,378,943.43/262,520.05
  6. Step 6: Final answer
    x = 127,561.22

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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.