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Finding the Fourth Proportional to 446,321.32, 615,617.74 and 285,104.78

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Solution

The fourth proportional to 446,321.32, 615,617.74 and 285,104.78 is: 393,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,321.32 : 615,617.74 = 285,104.78 : x
  2. Step 2: Convert to fraction form
    446,321.32/615,617.74 = 285,104.78/x
  3. Step 3: Cross multiply
    446,321.32x = 615,617.74 × 285,104.78
  4. Step 4: Simplify right side
    446,321.32x = 175,515,560,326.80
  5. Step 5: Solve for x
    x = 175,515,560,326.80/446,321.32
  6. Step 6: Final answer
    x = 393,249.33

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1.5x scale

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.