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Finding the Fourth Proportional to 351,551.52, 485,171.10 and 198,617.94

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Solution

The fourth proportional to 351,551.52, 485,171.10 and 198,617.94 is: 274,109.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,551.52 : 485,171.10 = 198,617.94 : x
  2. Step 2: Convert to fraction form
    351,551.52/485,171.10 = 198,617.94/x
  3. Step 3: Cross multiply
    351,551.52x = 485,171.10 × 198,617.94
  4. Step 4: Simplify right side
    351,551.52x = 96,363,684,429.53
  5. Step 5: Solve for x
    x = 96,363,684,429.53/351,551.52
  6. Step 6: Final answer
    x = 274,109.71

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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.