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Finding the Fourth Proportional to 422,975.32, 583,698 and 239,211.44

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Solution

The fourth proportional to 422,975.32, 583,698 and 239,211.44 is: 330,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,975.32 : 583,698 = 239,211.44 : x
  2. Step 2: Convert to fraction form
    422,975.32/583,698 = 239,211.44/x
  3. Step 3: Cross multiply
    422,975.32x = 583,698 × 239,211.44
  4. Step 4: Simplify right side
    422,975.32x = 139,627,239,105.12
  5. Step 5: Solve for x
    x = 139,627,239,105.12/422,975.32
  6. Step 6: Final answer
    x = 330,107.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.