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Finding the Fourth Proportional to 207,361.60, 311,042.40 and 74,246.20

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Solution

The fourth proportional to 207,361.60, 311,042.40 and 74,246.20 is: 111,369.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,361.60 : 311,042.40 = 74,246.20 : x
  2. Step 2: Convert to fraction form
    207,361.60/311,042.40 = 74,246.20/x
  3. Step 3: Cross multiply
    207,361.60x = 311,042.40 × 74,246.20
  4. Step 4: Simplify right side
    207,361.60x = 23,093,716,238.88
  5. Step 5: Solve for x
    x = 23,093,716,238.88/207,361.60
  6. Step 6: Final answer
    x = 111,369.30

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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.