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Finding the Fourth Proportional to 231,415.34, 347,130.65 and 79,610.90

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Solution

The fourth proportional to 231,415.34, 347,130.65 and 79,610.90 is: 119,418.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,415.34 : 347,130.65 = 79,610.90 : x
  2. Step 2: Convert to fraction form
    231,415.34/347,130.65 = 79,610.90/x
  3. Step 3: Cross multiply
    231,415.34x = 347,130.65 × 79,610.90
  4. Step 4: Simplify right side
    231,415.34x = 27,635,383,464.09
  5. Step 5: Solve for x
    x = 27,635,383,464.09/231,415.34
  6. Step 6: Final answer
    x = 119,418.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.