Home / 407,015.80-561,716.30-225,786.12

Finding the Fourth Proportional to 407,015.80, 561,716.30 and 225,786.12

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Solution

The fourth proportional to 407,015.80, 561,716.30 and 225,786.12 is: 311,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,015.80 : 561,716.30 = 225,786.12 : x
  2. Step 2: Convert to fraction form
    407,015.80/561,716.30 = 225,786.12/x
  3. Step 3: Cross multiply
    407,015.80x = 561,716.30 × 225,786.12
  4. Step 4: Simplify right side
    407,015.80x = 126,827,743,917.76
  5. Step 5: Solve for x
    x = 126,827,743,917.76/407,015.80
  6. Step 6: Final answer
    x = 311,603.98

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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.