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Finding the Fourth Proportional to 380,517.35, 570,363.35 and 190,519.56

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Solution

The fourth proportional to 380,517.35, 570,363.35 and 190,519.56 is: 285,572.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,517.35 : 570,363.35 = 190,519.56 : x
  2. Step 2: Convert to fraction form
    380,517.35/570,363.35 = 190,519.56/x
  3. Step 3: Cross multiply
    380,517.35x = 570,363.35 × 190,519.56
  4. Step 4: Simplify right side
    380,517.35x = 108,665,373,529.53
  5. Step 5: Solve for x
    x = 108,665,373,529.53/380,517.35
  6. Step 6: Final answer
    x = 285,572.72

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1.5x scale

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.