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Finding the Fourth Proportional to 394,220.40, 591,330.60 and 194,571.60

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Solution

The fourth proportional to 394,220.40, 591,330.60 and 194,571.60 is: 291,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,220.40 : 591,330.60 = 194,571.60 : x
  2. Step 2: Convert to fraction form
    394,220.40/591,330.60 = 194,571.60/x
  3. Step 3: Cross multiply
    394,220.40x = 591,330.60 × 194,571.60
  4. Step 4: Simplify right side
    394,220.40x = 115,056,140,970.96
  5. Step 5: Solve for x
    x = 115,056,140,970.96/394,220.40
  6. Step 6: Final answer
    x = 291,857.40

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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.