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Finding the Fourth Proportional to 217,243.60, 325,865.40 and 213,744.40

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Solution

The fourth proportional to 217,243.60, 325,865.40 and 213,744.40 is: 320,616.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,243.60 : 325,865.40 = 213,744.40 : x
  2. Step 2: Convert to fraction form
    217,243.60/325,865.40 = 213,744.40/x
  3. Step 3: Cross multiply
    217,243.60x = 325,865.40 × 213,744.40
  4. Step 4: Simplify right side
    217,243.60x = 69,651,904,403.76
  5. Step 5: Solve for x
    x = 69,651,904,403.76/217,243.60
  6. Step 6: Final answer
    x = 320,616.60

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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.