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Finding the Fourth Proportional to 548,088.98, 756,349.46 and 306,399.97

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Solution

The fourth proportional to 548,088.98, 756,349.46 and 306,399.97 is: 422,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,088.98 : 756,349.46 = 306,399.97 : x
  2. Step 2: Convert to fraction form
    548,088.98/756,349.46 = 306,399.97/x
  3. Step 3: Cross multiply
    548,088.98x = 756,349.46 × 306,399.97
  4. Step 4: Simplify right side
    548,088.98x = 231,745,451,853.52
  5. Step 5: Solve for x
    x = 231,745,451,853.52/548,088.98
  6. Step 6: Final answer
    x = 422,824.51

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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.