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Finding the Fourth Proportional to 465,188.52, 642,043.94 and 274,190.76

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Solution

The fourth proportional to 465,188.52, 642,043.94 and 274,190.76 is: 378,432.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,188.52 : 642,043.94 = 274,190.76 : x
  2. Step 2: Convert to fraction form
    465,188.52/642,043.94 = 274,190.76/x
  3. Step 3: Cross multiply
    465,188.52x = 642,043.94 × 274,190.76
  4. Step 4: Simplify right side
    465,188.52x = 176,042,515,861.99
  5. Step 5: Solve for x
    x = 176,042,515,861.99/465,188.52
  6. Step 6: Final answer
    x = 378,432.63

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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.