Home / 217,718.20-300,430.38-122,203

Finding the Fourth Proportional to 217,718.20, 300,430.38 and 122,203

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Solution

The fourth proportional to 217,718.20, 300,430.38 and 122,203 is: 168,628.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,718.20 : 300,430.38 = 122,203 : x
  2. Step 2: Convert to fraction form
    217,718.20/300,430.38 = 122,203/x
  3. Step 3: Cross multiply
    217,718.20x = 300,430.38 × 122,203
  4. Step 4: Simplify right side
    217,718.20x = 36,713,493,727.14
  5. Step 5: Solve for x
    x = 36,713,493,727.14/217,718.20
  6. Step 6: Final answer
    x = 168,628.50

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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.