Home / 290,200.12-400,656.20-199,522.24

Finding the Fourth Proportional to 290,200.12, 400,656.20 and 199,522.24

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Solution

The fourth proportional to 290,200.12, 400,656.20 and 199,522.24 is: 275,464.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,200.12 : 400,656.20 = 199,522.24 : x
  2. Step 2: Convert to fraction form
    290,200.12/400,656.20 = 199,522.24/x
  3. Step 3: Cross multiply
    290,200.12x = 400,656.20 × 199,522.24
  4. Step 4: Simplify right side
    290,200.12x = 79,939,822,493.89
  5. Step 5: Solve for x
    x = 79,939,822,493.89/290,200.12
  6. Step 6: Final answer
    x = 275,464.47

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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.