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Finding the Fourth Proportional to 238,469.70, 329,081.49 and 131,039.67

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Solution

The fourth proportional to 238,469.70, 329,081.49 and 131,039.67 is: 180,831.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,469.70 : 329,081.49 = 131,039.67 : x
  2. Step 2: Convert to fraction form
    238,469.70/329,081.49 = 131,039.67/x
  3. Step 3: Cross multiply
    238,469.70x = 329,081.49 × 131,039.67
  4. Step 4: Simplify right side
    238,469.70x = 43,122,729,852.71
  5. Step 5: Solve for x
    x = 43,122,729,852.71/238,469.70
  6. Step 6: Final answer
    x = 180,831.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.