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Finding the Fourth Proportional to 238,779, 329,404.68 and 143,119.56

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Solution

The fourth proportional to 238,779, 329,404.68 and 143,119.56 is: 197,438.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,779 : 329,404.68 = 143,119.56 : x
  2. Step 2: Convert to fraction form
    238,779/329,404.68 = 143,119.56/x
  3. Step 3: Cross multiply
    238,779x = 329,404.68 × 143,119.56
  4. Step 4: Simplify right side
    238,779x = 47,144,252,863.54
  5. Step 5: Solve for x
    x = 47,144,252,863.54/238,779
  6. Step 6: Final answer
    x = 197,438.86

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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.