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Finding the Fourth Proportional to 351,957.90, 485,695.57 and 198,993.45

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Solution

The fourth proportional to 351,957.90, 485,695.57 and 198,993.45 is: 274,607.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,957.90 : 485,695.57 = 198,993.45 : x
  2. Step 2: Convert to fraction form
    351,957.90/485,695.57 = 198,993.45/x
  3. Step 3: Cross multiply
    351,957.90x = 485,695.57 × 198,993.45
  4. Step 4: Simplify right side
    351,957.90x = 96,650,237,124.02
  5. Step 5: Solve for x
    x = 96,650,237,124.02/351,957.90
  6. Step 6: Final answer
    x = 274,607.38

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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.