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Finding the Fourth Proportional to 394,318.55, 544,159.88 and 213,030.41

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Solution

The fourth proportional to 394,318.55, 544,159.88 and 213,030.41 is: 293,982.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,318.55 : 544,159.88 = 213,030.41 : x
  2. Step 2: Convert to fraction form
    394,318.55/544,159.88 = 213,030.41/x
  3. Step 3: Cross multiply
    394,318.55x = 544,159.88 × 213,030.41
  4. Step 4: Simplify right side
    394,318.55x = 115,922,598,556.00
  5. Step 5: Solve for x
    x = 115,922,598,556.00/394,318.55
  6. Step 6: Final answer
    x = 293,982.11

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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.