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Finding the Fourth Proportional to 262,632.73, 394,072.12 and 129,440.38

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Solution

The fourth proportional to 262,632.73, 394,072.12 and 129,440.38 is: 194,221.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,632.73 : 394,072.12 = 129,440.38 : x
  2. Step 2: Convert to fraction form
    262,632.73/394,072.12 = 129,440.38/x
  3. Step 3: Cross multiply
    262,632.73x = 394,072.12 × 129,440.38
  4. Step 4: Simplify right side
    262,632.73x = 51,008,844,960.21
  5. Step 5: Solve for x
    x = 51,008,844,960.21/262,632.73
  6. Step 6: Final answer
    x = 194,221.20

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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.