Home / 217,748.37-300,485-122,259.09

Finding the Fourth Proportional to 217,748.37, 300,485 and 122,259.09

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Solution

The fourth proportional to 217,748.37, 300,485 and 122,259.09 is: 168,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,748.37 : 300,485 = 122,259.09 : x
  2. Step 2: Convert to fraction form
    217,748.37/300,485 = 122,259.09/x
  3. Step 3: Cross multiply
    217,748.37x = 300,485 × 122,259.09
  4. Step 4: Simplify right side
    217,748.37x = 36,737,022,658.65
  5. Step 5: Solve for x
    x = 36,737,022,658.65/217,748.37
  6. Step 6: Final answer
    x = 168,713.19

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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.