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Finding the Fourth Proportional to 351,912.64, 486,040.50 and 238,538.56

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Solution

The fourth proportional to 351,912.64, 486,040.50 and 238,538.56 is: 329,455.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,912.64 : 486,040.50 = 238,538.56 : x
  2. Step 2: Convert to fraction form
    351,912.64/486,040.50 = 238,538.56/x
  3. Step 3: Cross multiply
    351,912.64x = 486,040.50 × 238,538.56
  4. Step 4: Simplify right side
    351,912.64x = 115,939,400,971.68
  5. Step 5: Solve for x
    x = 115,939,400,971.68/351,912.64
  6. Step 6: Final answer
    x = 329,455.06

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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.