Home / 407,195.07-561,996.65-225,965.21

Finding the Fourth Proportional to 407,195.07, 561,996.65 and 225,965.21

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Solution

The fourth proportional to 407,195.07, 561,996.65 and 225,965.21 is: 311,869.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,195.07 : 561,996.65 = 225,965.21 : x
  2. Step 2: Convert to fraction form
    407,195.07/561,996.65 = 225,965.21/x
  3. Step 3: Cross multiply
    407,195.07x = 561,996.65 × 225,965.21
  4. Step 4: Simplify right side
    407,195.07x = 126,991,690,681.65
  5. Step 5: Solve for x
    x = 126,991,690,681.65/407,195.07
  6. Step 6: Final answer
    x = 311,869.42

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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.