Home / 369,173.09-509,458.85-199,407.21

Finding the Fourth Proportional to 369,173.09, 509,458.85 and 199,407.21

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Solution

The fourth proportional to 369,173.09, 509,458.85 and 199,407.21 is: 275,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,173.09 : 509,458.85 = 199,407.21 : x
  2. Step 2: Convert to fraction form
    369,173.09/509,458.85 = 199,407.21/x
  3. Step 3: Cross multiply
    369,173.09x = 509,458.85 × 199,407.21
  4. Step 4: Simplify right side
    369,173.09x = 101,589,766,891.27
  5. Step 5: Solve for x
    x = 101,589,766,891.27/369,173.09
  6. Step 6: Final answer
    x = 275,181.94

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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.