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Finding the Fourth Proportional to 262,695.92, 394,106.52 and 85,203.32

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Solution

The fourth proportional to 262,695.92, 394,106.52 and 85,203.32 is: 127,825.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,695.92 : 394,106.52 = 85,203.32 : x
  2. Step 2: Convert to fraction form
    262,695.92/394,106.52 = 85,203.32/x
  3. Step 3: Cross multiply
    262,695.92x = 394,106.52 × 85,203.32
  4. Step 4: Simplify right side
    262,695.92x = 33,579,183,937.65
  5. Step 5: Solve for x
    x = 33,579,183,937.65/262,695.92
  6. Step 6: Final answer
    x = 127,825.30

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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.