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Finding the Fourth Proportional to 217,709.84, 326,576.91 and 67,970.81

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Solution

The fourth proportional to 217,709.84, 326,576.91 and 67,970.81 is: 101,960.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,709.84 : 326,576.91 = 67,970.81 : x
  2. Step 2: Convert to fraction form
    217,709.84/326,576.91 = 67,970.81/x
  3. Step 3: Cross multiply
    217,709.84x = 326,576.91 × 67,970.81
  4. Step 4: Simplify right side
    217,709.84x = 22,197,697,100.00
  5. Step 5: Solve for x
    x = 22,197,697,100.00/217,709.84
  6. Step 6: Final answer
    x = 101,960.01

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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.