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Finding the Fourth Proportional to 351,562.95, 485,186.69 and 198,629.21

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Solution

The fourth proportional to 351,562.95, 485,186.69 and 198,629.21 is: 274,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,562.95 : 485,186.69 = 198,629.21 : x
  2. Step 2: Convert to fraction form
    351,562.95/485,186.69 = 198,629.21/x
  3. Step 3: Cross multiply
    351,562.95x = 485,186.69 × 198,629.21
  4. Step 4: Simplify right side
    351,562.95x = 96,372,250,646.75
  5. Step 5: Solve for x
    x = 96,372,250,646.75/351,562.95
  6. Step 6: Final answer
    x = 274,125.16

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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.