Home / 217,721.49-300,455.43-122,228.37

Finding the Fourth Proportional to 217,721.49, 300,455.43 and 122,228.37

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Solution

The fourth proportional to 217,721.49, 300,455.43 and 122,228.37 is: 168,675.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,721.49 : 300,455.43 = 122,228.37 : x
  2. Step 2: Convert to fraction form
    217,721.49/300,455.43 = 122,228.37/x
  3. Step 3: Cross multiply
    217,721.49x = 300,455.43 × 122,228.37
  4. Step 4: Simplify right side
    217,721.49x = 36,724,177,466.55
  5. Step 5: Solve for x
    x = 36,724,177,466.55/217,721.49
  6. Step 6: Final answer
    x = 168,675.02

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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.