Home / 394,727.40-592,096.68-128,489.31

Finding the Fourth Proportional to 394,727.40, 592,096.68 and 128,489.31

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Solution

The fourth proportional to 394,727.40, 592,096.68 and 128,489.31 is: 192,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,727.40 : 592,096.68 = 128,489.31 : x
  2. Step 2: Convert to fraction form
    394,727.40/592,096.68 = 128,489.31/x
  3. Step 3: Cross multiply
    394,727.40x = 592,096.68 × 128,489.31
  4. Step 4: Simplify right side
    394,727.40x = 76,078,093,866.49
  5. Step 5: Solve for x
    x = 76,078,093,866.49/394,727.40
  6. Step 6: Final answer
    x = 192,735.78

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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.