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Finding the Fourth Proportional to 561,121.58, 774,342.96 and 306,467.30

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Solution

The fourth proportional to 561,121.58, 774,342.96 and 306,467.30 is: 422,922.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,121.58 : 774,342.96 = 306,467.30 : x
  2. Step 2: Convert to fraction form
    561,121.58/774,342.96 = 306,467.30/x
  3. Step 3: Cross multiply
    561,121.58x = 774,342.96 × 306,467.30
  4. Step 4: Simplify right side
    561,121.58x = 237,310,795,241.95
  5. Step 5: Solve for x
    x = 237,310,795,241.95/561,121.58
  6. Step 6: Final answer
    x = 422,922.24

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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.