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Finding the Fourth Proportional to 231,785.56, 319,837.62 and 129,796.84

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Solution

The fourth proportional to 231,785.56, 319,837.62 and 129,796.84 is: 179,104.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,785.56 : 319,837.62 = 129,796.84 : x
  2. Step 2: Convert to fraction form
    231,785.56/319,837.62 = 129,796.84/x
  3. Step 3: Cross multiply
    231,785.56x = 319,837.62 × 129,796.84
  4. Step 4: Simplify right side
    231,785.56x = 41,513,912,389.12
  5. Step 5: Solve for x
    x = 41,513,912,389.12/231,785.56
  6. Step 6: Final answer
    x = 179,104.83

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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.