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Finding the Fourth Proportional to 201,912.20, 302,285.10 and 123,180.20

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Solution

The fourth proportional to 201,912.20, 302,285.10 and 123,180.20 is: 184,414.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,912.20 : 302,285.10 = 123,180.20 : x
  2. Step 2: Convert to fraction form
    201,912.20/302,285.10 = 123,180.20/x
  3. Step 3: Cross multiply
    201,912.20x = 302,285.10 × 123,180.20
  4. Step 4: Simplify right side
    201,912.20x = 37,235,539,075.02
  5. Step 5: Solve for x
    x = 37,235,539,075.02/201,912.20
  6. Step 6: Final answer
    x = 184,414.51

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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.