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Finding the Fourth Proportional to 238,644.09, 329,330.09 and 131,221.05

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Solution

The fourth proportional to 238,644.09, 329,330.09 and 131,221.05 is: 181,085.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,644.09 : 329,330.09 = 131,221.05 : x
  2. Step 2: Convert to fraction form
    238,644.09/329,330.09 = 131,221.05/x
  3. Step 3: Cross multiply
    238,644.09x = 329,330.09 × 131,221.05
  4. Step 4: Simplify right side
    238,644.09x = 43,215,039,550.29
  5. Step 5: Solve for x
    x = 43,215,039,550.29/238,644.09
  6. Step 6: Final answer
    x = 181,085.73

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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.