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Finding the Fourth Proportional to 394,951.75, 592,314.53 and 128,735.53

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Solution

The fourth proportional to 394,951.75, 592,314.53 and 128,735.53 is: 193,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,951.75 : 592,314.53 = 128,735.53 : x
  2. Step 2: Convert to fraction form
    394,951.75/592,314.53 = 128,735.53/x
  3. Step 3: Cross multiply
    394,951.75x = 592,314.53 × 128,735.53
  4. Step 4: Simplify right side
    394,951.75x = 76,251,922,821.79
  5. Step 5: Solve for x
    x = 76,251,922,821.79/394,951.75
  6. Step 6: Final answer
    x = 193,066.43

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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.