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Finding the Fourth Proportional to 448,074.89, 618,571.89 and 303,643.71

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Solution

The fourth proportional to 448,074.89, 618,571.89 and 303,643.71 is: 419,183.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,074.89 : 618,571.89 = 303,643.71 : x
  2. Step 2: Convert to fraction form
    448,074.89/618,571.89 = 303,643.71/x
  3. Step 3: Cross multiply
    448,074.89x = 618,571.89 × 303,643.71
  4. Step 4: Simplify right side
    448,074.89x = 187,825,463,581.31
  5. Step 5: Solve for x
    x = 187,825,463,581.31/448,074.89
  6. Step 6: Final answer
    x = 419,183.19

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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.