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Finding the Fourth Proportional to 319,375.58, 440,769.33 and 238,662.90

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Solution

The fourth proportional to 319,375.58, 440,769.33 and 238,662.90 is: 329,377.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,375.58 : 440,769.33 = 238,662.90 : x
  2. Step 2: Convert to fraction form
    319,375.58/440,769.33 = 238,662.90/x
  3. Step 3: Cross multiply
    319,375.58x = 440,769.33 × 238,662.90
  4. Step 4: Simplify right side
    319,375.58x = 105,195,286,528.86
  5. Step 5: Solve for x
    x = 105,195,286,528.86/319,375.58
  6. Step 6: Final answer
    x = 329,377.99

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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.