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Finding the Fourth Proportional to 217,134.23, 325,705.41 and 67,379.40

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Solution

The fourth proportional to 217,134.23, 325,705.41 and 67,379.40 is: 101,070.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,134.23 : 325,705.41 = 67,379.40 : x
  2. Step 2: Convert to fraction form
    217,134.23/325,705.41 = 67,379.40/x
  3. Step 3: Cross multiply
    217,134.23x = 325,705.41 × 67,379.40
  4. Step 4: Simplify right side
    217,134.23x = 21,945,835,102.55
  5. Step 5: Solve for x
    x = 21,945,835,102.55/217,134.23
  6. Step 6: Final answer
    x = 101,070.36

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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.