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Finding the Fourth Proportional to 394,804.67, 544,830.59 and 213,516.72

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Solution

The fourth proportional to 394,804.67, 544,830.59 and 213,516.72 is: 294,653.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,804.67 : 544,830.59 = 213,516.72 : x
  2. Step 2: Convert to fraction form
    394,804.67/544,830.59 = 213,516.72/x
  3. Step 3: Cross multiply
    394,804.67x = 544,830.59 × 213,516.72
  4. Step 4: Simplify right side
    394,804.67x = 116,330,439,464.88
  5. Step 5: Solve for x
    x = 116,330,439,464.88/394,804.67
  6. Step 6: Final answer
    x = 294,653.15

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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.