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Finding the Fourth Proportional to 378,297.81, 522,054.99 and 225,338.22

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Solution

The fourth proportional to 378,297.81, 522,054.99 and 225,338.22 is: 310,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,297.81 : 522,054.99 = 225,338.22 : x
  2. Step 2: Convert to fraction form
    378,297.81/522,054.99 = 225,338.22/x
  3. Step 3: Cross multiply
    378,297.81x = 522,054.99 × 225,338.22
  4. Step 4: Simplify right side
    378,297.81x = 117,638,942,188.72
  5. Step 5: Solve for x
    x = 117,638,942,188.72/378,297.81
  6. Step 6: Final answer
    x = 310,969.13

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1.5x scale

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.