Home / 394,942.37-592,455.26-128,723.72

Finding the Fourth Proportional to 394,942.37, 592,455.26 and 128,723.72

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Solution

The fourth proportional to 394,942.37, 592,455.26 and 128,723.72 is: 193,099.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,942.37 : 592,455.26 = 128,723.72 : x
  2. Step 2: Convert to fraction form
    394,942.37/592,455.26 = 128,723.72/x
  3. Step 3: Cross multiply
    394,942.37x = 592,455.26 × 128,723.72
  4. Step 4: Simplify right side
    394,942.37x = 76,263,042,360.30
  5. Step 5: Solve for x
    x = 76,263,042,360.30/394,942.37
  6. Step 6: Final answer
    x = 193,099.17

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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.