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Finding the Fourth Proportional to 394,485.60, 591,728.40 and 184,144.80

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Solution

The fourth proportional to 394,485.60, 591,728.40 and 184,144.80 is: 276,217.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,485.60 : 591,728.40 = 184,144.80 : x
  2. Step 2: Convert to fraction form
    394,485.60/591,728.40 = 184,144.80/x
  3. Step 3: Cross multiply
    394,485.60x = 591,728.40 × 184,144.80
  4. Step 4: Simplify right side
    394,485.60x = 108,963,707,872.32
  5. Step 5: Solve for x
    x = 108,963,707,872.32/394,485.60
  6. Step 6: Final answer
    x = 276,217.20

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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.