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Finding the Fourth Proportional to 239,107.71, 329,968.71 and 131,677.41

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Solution

The fourth proportional to 239,107.71, 329,968.71 and 131,677.41 is: 181,714.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,107.71 : 329,968.71 = 131,677.41 : x
  2. Step 2: Convert to fraction form
    239,107.71/329,968.71 = 131,677.41/x
  3. Step 3: Cross multiply
    239,107.71x = 329,968.71 × 131,677.41
  4. Step 4: Simplify right side
    239,107.71x = 43,449,425,113.84
  5. Step 5: Solve for x
    x = 43,449,425,113.84/239,107.71
  6. Step 6: Final answer
    x = 181,714.86

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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.