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Finding the Fourth Proportional to 448,074.62, 618,571.50 and 303,643.41

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Solution

The fourth proportional to 448,074.62, 618,571.50 and 303,643.41 is: 419,182.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,074.62 : 618,571.50 = 303,643.41 : x
  2. Step 2: Convert to fraction form
    448,074.62/618,571.50 = 303,643.41/x
  3. Step 3: Cross multiply
    448,074.62x = 618,571.50 × 303,643.41
  4. Step 4: Simplify right side
    448,074.62x = 187,825,159,588.82
  5. Step 5: Solve for x
    x = 187,825,159,588.82/448,074.62
  6. Step 6: Final answer
    x = 419,182.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.