Home / 400,910.85-553,257-219,629.25

Finding the Fourth Proportional to 400,910.85, 553,257 and 219,629.25

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Solution

The fourth proportional to 400,910.85, 553,257 and 219,629.25 is: 303,088.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,910.85 : 553,257 = 219,629.25 : x
  2. Step 2: Convert to fraction form
    400,910.85/553,257 = 219,629.25/x
  3. Step 3: Cross multiply
    400,910.85x = 553,257 × 219,629.25
  4. Step 4: Simplify right side
    400,910.85x = 121,511,419,967.25
  5. Step 5: Solve for x
    x = 121,511,419,967.25/400,910.85
  6. Step 6: Final answer
    x = 303,088.38

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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.