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Finding the Fourth Proportional to 448,338.31, 672,361.22 and 148,738.46

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Solution

The fourth proportional to 448,338.31, 672,361.22 and 148,738.46 is: 223,059.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,338.31 : 672,361.22 = 148,738.46 : x
  2. Step 2: Convert to fraction form
    448,338.31/672,361.22 = 148,738.46/x
  3. Step 3: Cross multiply
    448,338.31x = 672,361.22 × 148,738.46
  4. Step 4: Simplify right side
    448,338.31x = 100,005,969,436.56
  5. Step 5: Solve for x
    x = 100,005,969,436.56/448,338.31
  6. Step 6: Final answer
    x = 223,059.17

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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.