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Finding the Fourth Proportional to 394,328.67, 544,173.81 and 213,040.50

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Solution

The fourth proportional to 394,328.67, 544,173.81 and 213,040.50 is: 293,996.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,328.67 : 544,173.81 = 213,040.50 : x
  2. Step 2: Convert to fraction form
    394,328.67/544,173.81 = 213,040.50/x
  3. Step 3: Cross multiply
    394,328.67x = 544,173.81 × 213,040.50
  4. Step 4: Simplify right side
    394,328.67x = 115,931,060,569.31
  5. Step 5: Solve for x
    x = 115,931,060,569.31/394,328.67
  6. Step 6: Final answer
    x = 293,996.02

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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.