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Finding the Fourth Proportional to 220,302.76, 328,619.09 and 199,042.60

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Solution

The fourth proportional to 220,302.76, 328,619.09 and 199,042.60 is: 296,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,302.76 : 328,619.09 = 199,042.60 : x
  2. Step 2: Convert to fraction form
    220,302.76/328,619.09 = 199,042.60/x
  3. Step 3: Cross multiply
    220,302.76x = 328,619.09 × 199,042.60
  4. Step 4: Simplify right side
    220,302.76x = 65,409,198,083.23
  5. Step 5: Solve for x
    x = 65,409,198,083.23/220,302.76
  6. Step 6: Final answer
    x = 296,905.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.