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Finding the Fourth Proportional to 394,908.30, 554,271.30 and 394,908.30

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Solution

The fourth proportional to 394,908.30, 554,271.30 and 394,908.30 is: 554,271.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,908.30 : 554,271.30 = 394,908.30 : x
  2. Step 2: Convert to fraction form
    394,908.30/554,271.30 = 394,908.30/x
  3. Step 3: Cross multiply
    394,908.30x = 554,271.30 × 394,908.30
  4. Step 4: Simplify right side
    394,908.30x = 218,886,336,821.79
  5. Step 5: Solve for x
    x = 218,886,336,821.79/394,908.30
  6. Step 6: Final answer
    x = 554,271.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.