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Finding the Fourth Proportional to 217,078.43, 325,648.23 and 67,330.90

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Solution

The fourth proportional to 217,078.43, 325,648.23 and 67,330.90 is: 101,005.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,078.43 : 325,648.23 = 67,330.90 : x
  2. Step 2: Convert to fraction form
    217,078.43/325,648.23 = 67,330.90/x
  3. Step 3: Cross multiply
    217,078.43x = 325,648.23 × 67,330.90
  4. Step 4: Simplify right side
    217,078.43x = 21,926,188,409.31
  5. Step 5: Solve for x
    x = 21,926,188,409.31/217,078.43
  6. Step 6: Final answer
    x = 101,005.84

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1.5x scale

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.