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Finding the Fourth Proportional to 272,979.60, 409,469.40 and 167,857.80

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Solution

The fourth proportional to 272,979.60, 409,469.40 and 167,857.80 is: 251,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,979.60 : 409,469.40 = 167,857.80 : x
  2. Step 2: Convert to fraction form
    272,979.60/409,469.40 = 167,857.80/x
  3. Step 3: Cross multiply
    272,979.60x = 409,469.40 × 167,857.80
  4. Step 4: Simplify right side
    272,979.60x = 68,732,632,651.32
  5. Step 5: Solve for x
    x = 68,732,632,651.32/272,979.60
  6. Step 6: Final answer
    x = 251,786.70

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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.