Home / 320,388.32-442,116.96-177,137.12

Finding the Fourth Proportional to 320,388.32, 442,116.96 and 177,137.12

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Solution

The fourth proportional to 320,388.32, 442,116.96 and 177,137.12 is: 244,438.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,388.32 : 442,116.96 = 177,137.12 : x
  2. Step 2: Convert to fraction form
    320,388.32/442,116.96 = 177,137.12/x
  3. Step 3: Cross multiply
    320,388.32x = 442,116.96 × 177,137.12
  4. Step 4: Simplify right side
    320,388.32x = 78,315,324,997.56
  5. Step 5: Solve for x
    x = 78,315,324,997.56/320,388.32
  6. Step 6: Final answer
    x = 244,438.76

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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.