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Finding the Fourth Proportional to 321,667.33, 443,915.40 and 178,427.33

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Solution

The fourth proportional to 321,667.33, 443,915.40 and 178,427.33 is: 246,237.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,667.33 : 443,915.40 = 178,427.33 : x
  2. Step 2: Convert to fraction form
    321,667.33/443,915.40 = 178,427.33/x
  3. Step 3: Cross multiply
    321,667.33x = 443,915.40 × 178,427.33
  4. Step 4: Simplify right side
    321,667.33x = 79,206,639,567.88
  5. Step 5: Solve for x
    x = 79,206,639,567.88/321,667.33
  6. Step 6: Final answer
    x = 246,237.75

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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.