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Finding the Fourth Proportional to 326,143.97, 450,127.88 and 198,893.37

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Solution

The fourth proportional to 326,143.97, 450,127.88 and 198,893.37 is: 274,502.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,143.97 : 450,127.88 = 198,893.37 : x
  2. Step 2: Convert to fraction form
    326,143.97/450,127.88 = 198,893.37/x
  3. Step 3: Cross multiply
    326,143.97x = 450,127.88 × 198,893.37
  4. Step 4: Simplify right side
    326,143.97x = 89,527,453,542.29
  5. Step 5: Solve for x
    x = 89,527,453,542.29/326,143.97
  6. Step 6: Final answer
    x = 274,502.86

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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.