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Finding the Fourth Proportional to 200,421.30, 300,659.64 and 67,339.62

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Solution

The fourth proportional to 200,421.30, 300,659.64 and 67,339.62 is: 101,018.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,421.30 : 300,659.64 = 67,339.62 : x
  2. Step 2: Convert to fraction form
    200,421.30/300,659.64 = 67,339.62/x
  3. Step 3: Cross multiply
    200,421.30x = 300,659.64 × 67,339.62
  4. Step 4: Simplify right side
    200,421.30x = 20,246,305,906.94
  5. Step 5: Solve for x
    x = 20,246,305,906.94/200,421.30
  6. Step 6: Final answer
    x = 101,018.73

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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.