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Finding the Fourth Proportional to 380,505.60, 570,758.08 and 131,168

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Solution

The fourth proportional to 380,505.60, 570,758.08 and 131,168 is: 196,751.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,505.60 : 570,758.08 = 131,168 : x
  2. Step 2: Convert to fraction form
    380,505.60/570,758.08 = 131,168/x
  3. Step 3: Cross multiply
    380,505.60x = 570,758.08 × 131,168
  4. Step 4: Simplify right side
    380,505.60x = 74,865,195,837.44
  5. Step 5: Solve for x
    x = 74,865,195,837.44/380,505.60
  6. Step 6: Final answer
    x = 196,751.89

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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.