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Finding the Fourth Proportional to 238,640.88, 329,324.64 and 131,212.74

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Solution

The fourth proportional to 238,640.88, 329,324.64 and 131,212.74 is: 181,073.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,640.88 : 329,324.64 = 131,212.74 : x
  2. Step 2: Convert to fraction form
    238,640.88/329,324.64 = 131,212.74/x
  3. Step 3: Cross multiply
    238,640.88x = 329,324.64 × 131,212.74
  4. Step 4: Simplify right side
    238,640.88x = 43,211,588,363.91
  5. Step 5: Solve for x
    x = 43,211,588,363.91/238,640.88
  6. Step 6: Final answer
    x = 181,073.71

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1.5x scale

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.