Home / 407,021.09-561,723.62-225,791.42

Finding the Fourth Proportional to 407,021.09, 561,723.62 and 225,791.42

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Solution

The fourth proportional to 407,021.09, 561,723.62 and 225,791.42 is: 311,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,021.09 : 561,723.62 = 225,791.42 : x
  2. Step 2: Convert to fraction form
    407,021.09/561,723.62 = 225,791.42/x
  3. Step 3: Cross multiply
    407,021.09x = 561,723.62 × 225,791.42
  4. Step 4: Simplify right side
    407,021.09x = 126,832,369,869.77
  5. Step 5: Solve for x
    x = 126,832,369,869.77/407,021.09
  6. Step 6: Final answer
    x = 311,611.30

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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.