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Finding the Fourth Proportional to 351,911.52, 485,523.72 and 198,934.92

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Solution

The fourth proportional to 351,911.52, 485,523.72 and 198,934.92 is: 274,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,911.52 : 485,523.72 = 198,934.92 : x
  2. Step 2: Convert to fraction form
    351,911.52/485,523.72 = 198,934.92/x
  3. Step 3: Cross multiply
    351,911.52x = 485,523.72 × 198,934.92
  4. Step 4: Simplify right side
    351,911.52x = 96,587,622,396.30
  5. Step 5: Solve for x
    x = 96,587,622,396.30/351,911.52
  6. Step 6: Final answer
    x = 274,465.65

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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.