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Finding the Fourth Proportional to 308,099.94, 425,105.06 and 178,961.68

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Solution

The fourth proportional to 308,099.94, 425,105.06 and 178,961.68 is: 246,924.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,099.94 : 425,105.06 = 178,961.68 : x
  2. Step 2: Convert to fraction form
    308,099.94/425,105.06 = 178,961.68/x
  3. Step 3: Cross multiply
    308,099.94x = 425,105.06 × 178,961.68
  4. Step 4: Simplify right side
    308,099.94x = 76,077,515,714.10
  5. Step 5: Solve for x
    x = 76,077,515,714.10/308,099.94
  6. Step 6: Final answer
    x = 246,924.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.