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Finding the Fourth Proportional to 351,713.31, 485,300.46 and 196,667.40

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Solution

The fourth proportional to 351,713.31, 485,300.46 and 196,667.40 is: 271,365.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,713.31 : 485,300.46 = 196,667.40 : x
  2. Step 2: Convert to fraction form
    351,713.31/485,300.46 = 196,667.40/x
  3. Step 3: Cross multiply
    351,713.31x = 485,300.46 × 196,667.40
  4. Step 4: Simplify right side
    351,713.31x = 95,442,779,687.00
  5. Step 5: Solve for x
    x = 95,442,779,687.00/351,713.31
  6. Step 6: Final answer
    x = 271,365.28

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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.