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Finding the Fourth Proportional to 394,667.08, 544,640.53 and 213,378.98

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Solution

The fourth proportional to 394,667.08, 544,640.53 and 213,378.98 is: 294,462.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,667.08 : 544,640.53 = 213,378.98 : x
  2. Step 2: Convert to fraction form
    394,667.08/544,640.53 = 213,378.98/x
  3. Step 3: Cross multiply
    394,667.08x = 544,640.53 × 213,378.98
  4. Step 4: Simplify right side
    394,667.08x = 116,214,843,097.03
  5. Step 5: Solve for x
    x = 116,214,843,097.03/394,667.08
  6. Step 6: Final answer
    x = 294,462.97

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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.