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Finding the Fourth Proportional to 217,839.58, 300,616.72 and 122,344.22

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Solution

The fourth proportional to 217,839.58, 300,616.72 and 122,344.22 is: 168,833.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,839.58 : 300,616.72 = 122,344.22 : x
  2. Step 2: Convert to fraction form
    217,839.58/300,616.72 = 122,344.22/x
  3. Step 3: Cross multiply
    217,839.58x = 300,616.72 × 122,344.22
  4. Step 4: Simplify right side
    217,839.58x = 36,778,718,573.04
  5. Step 5: Solve for x
    x = 36,778,718,573.04/217,839.58
  6. Step 6: Final answer
    x = 168,833.96

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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.