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Finding the Fourth Proportional to 379,940.05, 570,106.52 and 166,857.74

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Solution

The fourth proportional to 379,940.05, 570,106.52 and 166,857.74 is: 250,372.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,940.05 : 570,106.52 = 166,857.74 : x
  2. Step 2: Convert to fraction form
    379,940.05/570,106.52 = 166,857.74/x
  3. Step 3: Cross multiply
    379,940.05x = 570,106.52 × 166,857.74
  4. Step 4: Simplify right side
    379,940.05x = 95,126,684,565.26
  5. Step 5: Solve for x
    x = 95,126,684,565.26/379,940.05
  6. Step 6: Final answer
    x = 250,372.88

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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.