Home / 351,734.23-485,417.87-198,786.55

Finding the Fourth Proportional to 351,734.23, 485,417.87 and 198,786.55

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Solution

The fourth proportional to 351,734.23, 485,417.87 and 198,786.55 is: 274,339.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,734.23 : 485,417.87 = 198,786.55 : x
  2. Step 2: Convert to fraction form
    351,734.23/485,417.87 = 198,786.55/x
  3. Step 3: Cross multiply
    351,734.23x = 485,417.87 × 198,786.55
  4. Step 4: Simplify right side
    351,734.23x = 96,494,543,685.65
  5. Step 5: Solve for x
    x = 96,494,543,685.65/351,734.23
  6. Step 6: Final answer
    x = 274,339.36

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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.