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Finding the Fourth Proportional to 339,880.32, 469,032 and 188,976

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Solution

The fourth proportional to 339,880.32, 469,032 and 188,976 is: 260,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,880.32 : 469,032 = 188,976 : x
  2. Step 2: Convert to fraction form
    339,880.32/469,032 = 188,976/x
  3. Step 3: Cross multiply
    339,880.32x = 469,032 × 188,976
  4. Step 4: Simplify right side
    339,880.32x = 88,635,791,232
  5. Step 5: Solve for x
    x = 88,635,791,232/339,880.32
  6. Step 6: Final answer
    x = 260,785.30

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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.