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Finding the Fourth Proportional to 171,818.20, 257,727.30 and 162,632.80

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Solution

The fourth proportional to 171,818.20, 257,727.30 and 162,632.80 is: 243,949.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,818.20 : 257,727.30 = 162,632.80 : x
  2. Step 2: Convert to fraction form
    171,818.20/257,727.30 = 162,632.80/x
  3. Step 3: Cross multiply
    171,818.20x = 257,727.30 × 162,632.80
  4. Step 4: Simplify right side
    171,818.20x = 41,914,912,435.44
  5. Step 5: Solve for x
    x = 41,914,912,435.44/171,818.20
  6. Step 6: Final answer
    x = 243,949.20

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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.