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Finding the Fourth Proportional to 351,958.90, 485,696.95 and 198,994.45

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Solution

The fourth proportional to 351,958.90, 485,696.95 and 198,994.45 is: 274,608.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,958.90 : 485,696.95 = 198,994.45 : x
  2. Step 2: Convert to fraction form
    351,958.90/485,696.95 = 198,994.45/x
  3. Step 3: Cross multiply
    351,958.90x = 485,696.95 × 198,994.45
  4. Step 4: Simplify right side
    351,958.90x = 96,650,997,431.93
  5. Step 5: Solve for x
    x = 96,650,997,431.93/351,958.90
  6. Step 6: Final answer
    x = 274,608.76

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1.5x scale

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.