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Finding the Fourth Proportional to 217,516.40, 326,393.48 and 84,401.88

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Solution

The fourth proportional to 217,516.40, 326,393.48 and 84,401.88 is: 126,648.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,516.40 : 326,393.48 = 84,401.88 : x
  2. Step 2: Convert to fraction form
    217,516.40/326,393.48 = 84,401.88/x
  3. Step 3: Cross multiply
    217,516.40x = 326,393.48 × 84,401.88
  4. Step 4: Simplify right side
    217,516.40x = 27,548,223,331.74
  5. Step 5: Solve for x
    x = 27,548,223,331.74/217,516.40
  6. Step 6: Final answer
    x = 126,648.95

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