Home / 380,760.92-525,453.20-210,997.88

Finding the Fourth Proportional to 380,760.92, 525,453.20 and 210,997.88

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Solution

The fourth proportional to 380,760.92, 525,453.20 and 210,997.88 is: 291,178.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,760.92 : 525,453.20 = 210,997.88 : x
  2. Step 2: Convert to fraction form
    380,760.92/525,453.20 = 210,997.88/x
  3. Step 3: Cross multiply
    380,760.92x = 525,453.20 × 210,997.88
  4. Step 4: Simplify right side
    380,760.92x = 110,869,511,239.22
  5. Step 5: Solve for x
    x = 110,869,511,239.22/380,760.92
  6. Step 6: Final answer
    x = 291,178.81

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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.