Home / 405,121.84-559,079.41-223,845.45

Finding the Fourth Proportional to 405,121.84, 559,079.41 and 223,845.45

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Solution

The fourth proportional to 405,121.84, 559,079.41 and 223,845.45 is: 308,912.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,121.84 : 559,079.41 = 223,845.45 : x
  2. Step 2: Convert to fraction form
    405,121.84/559,079.41 = 223,845.45/x
  3. Step 3: Cross multiply
    405,121.84x = 559,079.41 × 223,845.45
  4. Step 4: Simplify right side
    405,121.84x = 125,147,378,202.56
  5. Step 5: Solve for x
    x = 125,147,378,202.56/405,121.84
  6. Step 6: Final answer
    x = 308,912.94

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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.