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Finding the Fourth Proportional to 220,907.40, 331,361.10 and 203,800.20

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Solution

The fourth proportional to 220,907.40, 331,361.10 and 203,800.20 is: 305,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,907.40 : 331,361.10 = 203,800.20 : x
  2. Step 2: Convert to fraction form
    220,907.40/331,361.10 = 203,800.20/x
  3. Step 3: Cross multiply
    220,907.40x = 331,361.10 × 203,800.20
  4. Step 4: Simplify right side
    220,907.40x = 67,531,458,452.22
  5. Step 5: Solve for x
    x = 67,531,458,452.22/220,907.40
  6. Step 6: Final answer
    x = 305,700.30

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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.