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Finding the Fourth Proportional to 262,520.30, 393,843.18 and 85,027.52

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Solution

The fourth proportional to 262,520.30, 393,843.18 and 85,027.52 is: 127,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,520.30 : 393,843.18 = 85,027.52 : x
  2. Step 2: Convert to fraction form
    262,520.30/393,843.18 = 85,027.52/x
  3. Step 3: Cross multiply
    262,520.30x = 393,843.18 × 85,027.52
  4. Step 4: Simplify right side
    262,520.30x = 33,487,508,864.31
  5. Step 5: Solve for x
    x = 33,487,508,864.31/262,520.30
  6. Step 6: Final answer
    x = 127,561.60

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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.