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Finding the Fourth Proportional to 200,440.64, 300,650.40 and 67,323.62

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Solution

The fourth proportional to 200,440.64, 300,650.40 and 67,323.62 is: 100,981.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,440.64 : 300,650.40 = 67,323.62 : x
  2. Step 2: Convert to fraction form
    200,440.64/300,650.40 = 67,323.62/x
  3. Step 3: Cross multiply
    200,440.64x = 300,650.40 × 67,323.62
  4. Step 4: Simplify right side
    200,440.64x = 20,240,873,282.45
  5. Step 5: Solve for x
    x = 20,240,873,282.45/200,440.64
  6. Step 6: Final answer
    x = 100,981.88

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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.