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Finding the Fourth Proportional to 548,173.49, 756,475.94 and 306,454.91

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Solution

The fourth proportional to 548,173.49, 756,475.94 and 306,454.91 is: 422,905.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,173.49 : 756,475.94 = 306,454.91 : x
  2. Step 2: Convert to fraction form
    548,173.49/756,475.94 = 306,454.91/x
  3. Step 3: Cross multiply
    548,173.49x = 756,475.94 × 306,454.91
  4. Step 4: Simplify right side
    548,173.49x = 231,825,763,093.62
  5. Step 5: Solve for x
    x = 231,825,763,093.62/548,173.49
  6. Step 6: Final answer
    x = 422,905.83

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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.