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Finding the Fourth Proportional to 171,939.20, 257,908.80 and 169,314.80

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Solution

The fourth proportional to 171,939.20, 257,908.80 and 169,314.80 is: 253,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,939.20 : 257,908.80 = 169,314.80 : x
  2. Step 2: Convert to fraction form
    171,939.20/257,908.80 = 169,314.80/x
  3. Step 3: Cross multiply
    171,939.20x = 257,908.80 × 169,314.80
  4. Step 4: Simplify right side
    171,939.20x = 43,667,776,890.24
  5. Step 5: Solve for x
    x = 43,667,776,890.24/171,939.20
  6. Step 6: Final answer
    x = 253,972.20

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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.