Home / 217,736.20-300,455.22-122,221

Finding the Fourth Proportional to 217,736.20, 300,455.22 and 122,221

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Solution

The fourth proportional to 217,736.20, 300,455.22 and 122,221 is: 168,653.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,736.20 : 300,455.22 = 122,221 : x
  2. Step 2: Convert to fraction form
    217,736.20/300,455.22 = 122,221/x
  3. Step 3: Cross multiply
    217,736.20x = 300,455.22 × 122,221
  4. Step 4: Simplify right side
    217,736.20x = 36,721,937,443.62
  5. Step 5: Solve for x
    x = 36,721,937,443.62/217,736.20
  6. Step 6: Final answer
    x = 168,653.34

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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.