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Finding the Fourth Proportional to 238,313.56, 328,871.44 and 129,416.96

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Solution

The fourth proportional to 238,313.56, 328,871.44 and 129,416.96 is: 178,594.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,313.56 : 328,871.44 = 129,416.96 : x
  2. Step 2: Convert to fraction form
    238,313.56/328,871.44 = 129,416.96/x
  3. Step 3: Cross multiply
    238,313.56x = 328,871.44 × 129,416.96
  4. Step 4: Simplify right side
    238,313.56x = 42,561,541,995.62
  5. Step 5: Solve for x
    x = 42,561,541,995.62/238,313.56
  6. Step 6: Final answer
    x = 178,594.71

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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.