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Finding the Fourth Proportional to 351,930.52, 485,549.94 and 198,953.92

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Solution

The fourth proportional to 351,930.52, 485,549.94 and 198,953.92 is: 274,491.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,930.52 : 485,549.94 = 198,953.92 : x
  2. Step 2: Convert to fraction form
    351,930.52/485,549.94 = 198,953.92/x
  3. Step 3: Cross multiply
    351,930.52x = 485,549.94 × 198,953.92
  4. Step 4: Simplify right side
    351,930.52x = 96,602,063,918.76
  5. Step 5: Solve for x
    x = 96,602,063,918.76/351,930.52
  6. Step 6: Final answer
    x = 274,491.86

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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.