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Finding the Fourth Proportional to 239,123.88, 329,978.12 and 131,672.92

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Solution

The fourth proportional to 239,123.88, 329,978.12 and 131,672.92 is: 181,701.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,123.88 : 329,978.12 = 131,672.92 : x
  2. Step 2: Convert to fraction form
    239,123.88/329,978.12 = 131,672.92/x
  3. Step 3: Cross multiply
    239,123.88x = 329,978.12 × 131,672.92
  4. Step 4: Simplify right side
    239,123.88x = 43,449,182,596.51
  5. Step 5: Solve for x
    x = 43,449,182,596.51/239,123.88
  6. Step 6: Final answer
    x = 181,701.56

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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.