Home / 305,936.76-422,074.80-225,555.36

Finding the Fourth Proportional to 305,936.76, 422,074.80 and 225,555.36

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Solution

The fourth proportional to 305,936.76, 422,074.80 and 225,555.36 is: 311,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,936.76 : 422,074.80 = 225,555.36 : x
  2. Step 2: Convert to fraction form
    305,936.76/422,074.80 = 225,555.36/x
  3. Step 3: Cross multiply
    305,936.76x = 422,074.80 × 225,555.36
  4. Step 4: Simplify right side
    305,936.76x = 95,201,233,460.93
  5. Step 5: Solve for x
    x = 95,201,233,460.93/305,936.76
  6. Step 6: Final answer
    x = 311,179.45

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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.