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Finding the Fourth Proportional to 217,040.67, 325,672.15 and 103,317.18

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Solution

The fourth proportional to 217,040.67, 325,672.15 and 103,317.18 is: 155,028.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,040.67 : 325,672.15 = 103,317.18 : x
  2. Step 2: Convert to fraction form
    217,040.67/325,672.15 = 103,317.18/x
  3. Step 3: Cross multiply
    217,040.67x = 325,672.15 × 103,317.18
  4. Step 4: Simplify right side
    217,040.67x = 33,647,529,219.22
  5. Step 5: Solve for x
    x = 33,647,529,219.22/217,040.67
  6. Step 6: Final answer
    x = 155,028.68

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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.