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Finding the Fourth Proportional to 215,682.40, 323,523.60 and 206,005.60

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Solution

The fourth proportional to 215,682.40, 323,523.60 and 206,005.60 is: 309,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,682.40 : 323,523.60 = 206,005.60 : x
  2. Step 2: Convert to fraction form
    215,682.40/323,523.60 = 206,005.60/x
  3. Step 3: Cross multiply
    215,682.40x = 323,523.60 × 206,005.60
  4. Step 4: Simplify right side
    215,682.40x = 66,647,673,332.16
  5. Step 5: Solve for x
    x = 66,647,673,332.16/215,682.40
  6. Step 6: Final answer
    x = 309,008.40

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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.