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Finding the Fourth Proportional to 231,777.72, 319,893.30 and 131,175.72

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Solution

The fourth proportional to 231,777.72, 319,893.30 and 131,175.72 is: 181,045.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,777.72 : 319,893.30 = 131,175.72 : x
  2. Step 2: Convert to fraction form
    231,777.72/319,893.30 = 131,175.72/x
  3. Step 3: Cross multiply
    231,777.72x = 319,893.30 × 131,175.72
  4. Step 4: Simplify right side
    231,777.72x = 41,962,233,950.68
  5. Step 5: Solve for x
    x = 41,962,233,950.68/231,777.72
  6. Step 6: Final answer
    x = 181,045.16

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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.