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Finding the Fourth Proportional to 548,111.25, 756,391.17 and 306,393.60

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Solution

The fourth proportional to 548,111.25, 756,391.17 and 306,393.60 is: 422,821.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,111.25 : 756,391.17 = 306,393.60 : x
  2. Step 2: Convert to fraction form
    548,111.25/756,391.17 = 306,393.60/x
  3. Step 3: Cross multiply
    548,111.25x = 756,391.17 × 306,393.60
  4. Step 4: Simplify right side
    548,111.25x = 231,753,413,584.51
  5. Step 5: Solve for x
    x = 231,753,413,584.51/548,111.25
  6. Step 6: Final answer
    x = 422,821.85

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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.