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Finding the Fourth Proportional to 394,792.56, 592,268.81 and 128,481.57

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Solution

The fourth proportional to 394,792.56, 592,268.81 and 128,481.57 is: 192,748.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,792.56 : 592,268.81 = 128,481.57 : x
  2. Step 2: Convert to fraction form
    394,792.56/592,268.81 = 128,481.57/x
  3. Step 3: Cross multiply
    394,792.56x = 592,268.81 × 128,481.57
  4. Step 4: Simplify right side
    394,792.56x = 76,095,625,928.42
  5. Step 5: Solve for x
    x = 76,095,625,928.42/394,792.56
  6. Step 6: Final answer
    x = 192,748.38

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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.