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Finding the Fourth Proportional to 341,442.60, 512,163.90 and 221,692.20

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Solution

The fourth proportional to 341,442.60, 512,163.90 and 221,692.20 is: 332,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,442.60 : 512,163.90 = 221,692.20 : x
  2. Step 2: Convert to fraction form
    341,442.60/512,163.90 = 221,692.20/x
  3. Step 3: Cross multiply
    341,442.60x = 512,163.90 × 221,692.20
  4. Step 4: Simplify right side
    341,442.60x = 113,542,741,751.58
  5. Step 5: Solve for x
    x = 113,542,741,751.58/341,442.60
  6. Step 6: Final answer
    x = 332,538.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.