Home / 407,015.65-561,716.10-225,785.97

Finding the Fourth Proportional to 407,015.65, 561,716.10 and 225,785.97

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Solution

The fourth proportional to 407,015.65, 561,716.10 and 225,785.97 is: 311,603.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,015.65 : 561,716.10 = 225,785.97 : x
  2. Step 2: Convert to fraction form
    407,015.65/561,716.10 = 225,785.97/x
  3. Step 3: Cross multiply
    407,015.65x = 561,716.10 × 225,785.97
  4. Step 4: Simplify right side
    407,015.65x = 126,827,614,503.12
  5. Step 5: Solve for x
    x = 126,827,614,503.12/407,015.65
  6. Step 6: Final answer
    x = 311,603.78

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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.