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Finding the Fourth Proportional to 217,027.40, 325,346.70 and 142,183.40

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Solution

The fourth proportional to 217,027.40, 325,346.70 and 142,183.40 is: 213,147.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,027.40 : 325,346.70 = 142,183.40 : x
  2. Step 2: Convert to fraction form
    217,027.40/325,346.70 = 142,183.40/x
  3. Step 3: Cross multiply
    217,027.40x = 325,346.70 × 142,183.40
  4. Step 4: Simplify right side
    217,027.40x = 46,258,899,984.78
  5. Step 5: Solve for x
    x = 46,258,899,984.78/217,027.40
  6. Step 6: Final answer
    x = 213,147.74

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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.