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Finding the Fourth Proportional to 394,343.64, 544,194.45 and 213,055.52

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Solution

The fourth proportional to 394,343.64, 544,194.45 and 213,055.52 is: 294,016.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,343.64 : 544,194.45 = 213,055.52 : x
  2. Step 2: Convert to fraction form
    394,343.64/544,194.45 = 213,055.52/x
  3. Step 3: Cross multiply
    394,343.64x = 544,194.45 × 213,055.52
  4. Step 4: Simplify right side
    394,343.64x = 115,943,628,804.89
  5. Step 5: Solve for x
    x = 115,943,628,804.89/394,343.64
  6. Step 6: Final answer
    x = 294,016.73

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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.