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Finding the Fourth Proportional to 217,015.60, 325,404.48 and 67,214.30

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Solution

The fourth proportional to 217,015.60, 325,404.48 and 67,214.30 is: 100,784.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,015.60 : 325,404.48 = 67,214.30 : x
  2. Step 2: Convert to fraction form
    217,015.60/325,404.48 = 67,214.30/x
  3. Step 3: Cross multiply
    217,015.60x = 325,404.48 × 67,214.30
  4. Step 4: Simplify right side
    217,015.60x = 21,871,835,405.63
  5. Step 5: Solve for x
    x = 21,871,835,405.63/217,015.60
  6. Step 6: Final answer
    x = 100,784.62

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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.