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Finding the Fourth Proportional to 172,364.20, 258,546.30 and 169,739.80

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Solution

The fourth proportional to 172,364.20, 258,546.30 and 169,739.80 is: 254,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,364.20 : 258,546.30 = 169,739.80 : x
  2. Step 2: Convert to fraction form
    172,364.20/258,546.30 = 169,739.80/x
  3. Step 3: Cross multiply
    172,364.20x = 258,546.30 × 169,739.80
  4. Step 4: Simplify right side
    172,364.20x = 43,885,597,252.74
  5. Step 5: Solve for x
    x = 43,885,597,252.74/172,364.20
  6. Step 6: Final answer
    x = 254,609.70

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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.