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Finding the Fourth Proportional to 325,986.94, 488,885.52 and 126,262.78

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Solution

The fourth proportional to 325,986.94, 488,885.52 and 126,262.78 is: 189,357.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,986.94 : 488,885.52 = 126,262.78 : x
  2. Step 2: Convert to fraction form
    325,986.94/488,885.52 = 126,262.78/x
  3. Step 3: Cross multiply
    325,986.94x = 488,885.52 × 126,262.78
  4. Step 4: Simplify right side
    325,986.94x = 61,728,044,856.95
  5. Step 5: Solve for x
    x = 61,728,044,856.95/325,986.94
  6. Step 6: Final answer
    x = 189,357.42

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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.