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Finding the Fourth Proportional to 279,639.60, 419,164.02 and 200,711.04

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Solution

The fourth proportional to 279,639.60, 419,164.02 and 200,711.04 is: 300,854.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,639.60 : 419,164.02 = 200,711.04 : x
  2. Step 2: Convert to fraction form
    279,639.60/419,164.02 = 200,711.04/x
  3. Step 3: Cross multiply
    279,639.60x = 419,164.02 × 200,711.04
  4. Step 4: Simplify right side
    279,639.60x = 84,130,846,384.78
  5. Step 5: Solve for x
    x = 84,130,846,384.78/279,639.60
  6. Step 6: Final answer
    x = 300,854.55

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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.