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Finding the Fourth Proportional to 394,715.73, 544,708.08 and 213,427.61

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Solution

The fourth proportional to 394,715.73, 544,708.08 and 213,427.61 is: 294,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,715.73 : 544,708.08 = 213,427.61 : x
  2. Step 2: Convert to fraction form
    394,715.73/544,708.08 = 213,427.61/x
  3. Step 3: Cross multiply
    394,715.73x = 544,708.08 × 213,427.61
  4. Step 4: Simplify right side
    394,715.73x = 116,255,740,938.55
  5. Step 5: Solve for x
    x = 116,255,740,938.55/394,715.73
  6. Step 6: Final answer
    x = 294,530.30

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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.