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Finding the Fourth Proportional to 392,989.44, 542,325.33 and 214,141.44

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Solution

The fourth proportional to 392,989.44, 542,325.33 and 214,141.44 is: 295,515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,989.44 : 542,325.33 = 214,141.44 : x
  2. Step 2: Convert to fraction form
    392,989.44/542,325.33 = 214,141.44/x
  3. Step 3: Cross multiply
    392,989.44x = 542,325.33 × 214,141.44
  4. Step 4: Simplify right side
    392,989.44x = 116,134,327,114.68
  5. Step 5: Solve for x
    x = 116,134,327,114.68/392,989.44
  6. Step 6: Final answer
    x = 295,515.13

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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.