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Finding the Fourth Proportional to 231,661, 319,690.02 and 131,059

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Solution

The fourth proportional to 231,661, 319,690.02 and 131,059 is: 180,860.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,661 : 319,690.02 = 131,059 : x
  2. Step 2: Convert to fraction form
    231,661/319,690.02 = 131,059/x
  3. Step 3: Cross multiply
    231,661x = 319,690.02 × 131,059
  4. Step 4: Simplify right side
    231,661x = 41,898,254,331.18
  5. Step 5: Solve for x
    x = 41,898,254,331.18/231,661
  6. Step 6: Final answer
    x = 180,860.20

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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.