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Finding the Fourth Proportional to 380,606.44, 570,909.66 and 131,269

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Solution

The fourth proportional to 380,606.44, 570,909.66 and 131,269 is: 196,903.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,606.44 : 570,909.66 = 131,269 : x
  2. Step 2: Convert to fraction form
    380,606.44/570,909.66 = 131,269/x
  3. Step 3: Cross multiply
    380,606.44x = 570,909.66 × 131,269
  4. Step 4: Simplify right side
    380,606.44x = 74,942,740,158.54
  5. Step 5: Solve for x
    x = 74,942,740,158.54/380,606.44
  6. Step 6: Final answer
    x = 196,903.50

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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.