Home / 380,410.23-525,512.92-303,828.78

Finding the Fourth Proportional to 380,410.23, 525,512.92 and 303,828.78

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Solution

The fourth proportional to 380,410.23, 525,512.92 and 303,828.78 is: 419,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,410.23 : 525,512.92 = 303,828.78 : x
  2. Step 2: Convert to fraction form
    380,410.23/525,512.92 = 303,828.78/x
  3. Step 3: Cross multiply
    380,410.23x = 525,512.92 × 303,828.78
  4. Step 4: Simplify right side
    380,410.23x = 159,665,949,357.84
  5. Step 5: Solve for x
    x = 159,665,949,357.84/380,410.23
  6. Step 6: Final answer
    x = 419,720.44

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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.