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Finding the Fourth Proportional to 217,718.93, 326,599.01 and 84,609.45

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Solution

The fourth proportional to 217,718.93, 326,599.01 and 84,609.45 is: 126,922.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,718.93 : 326,599.01 = 84,609.45 : x
  2. Step 2: Convert to fraction form
    217,718.93/326,599.01 = 84,609.45/x
  3. Step 3: Cross multiply
    217,718.93x = 326,599.01 × 84,609.45
  4. Step 4: Simplify right side
    217,718.93x = 27,633,362,183.60
  5. Step 5: Solve for x
    x = 27,633,362,183.60/217,718.93
  6. Step 6: Final answer
    x = 126,922.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.