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Finding the Fourth Proportional to 547,908.94, 756,144.21 and 306,191.98

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Solution

The fourth proportional to 547,908.94, 756,144.21 and 306,191.98 is: 422,561.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,908.94 : 756,144.21 = 306,191.98 : x
  2. Step 2: Convert to fraction form
    547,908.94/756,144.21 = 306,191.98/x
  3. Step 3: Cross multiply
    547,908.94x = 756,144.21 × 306,191.98
  4. Step 4: Simplify right side
    547,908.94x = 231,525,292,825.44
  5. Step 5: Solve for x
    x = 231,525,292,825.44/547,908.94
  6. Step 6: Final answer
    x = 422,561.63

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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.