Home / 407,021.10-561,723.63-225,791.43

Finding the Fourth Proportional to 407,021.10, 561,723.63 and 225,791.43

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Solution

The fourth proportional to 407,021.10, 561,723.63 and 225,791.43 is: 311,611.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,021.10 : 561,723.63 = 225,791.43 : x
  2. Step 2: Convert to fraction form
    407,021.10/561,723.63 = 225,791.43/x
  3. Step 3: Cross multiply
    407,021.10x = 561,723.63 × 225,791.43
  4. Step 4: Simplify right side
    407,021.10x = 126,832,381,682.49
  5. Step 5: Solve for x
    x = 126,832,381,682.49/407,021.10
  6. Step 6: Final answer
    x = 311,611.32

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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.