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Finding the Fourth Proportional to 427,967.20, 641,659.20 and 203,435.20

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Solution

The fourth proportional to 427,967.20, 641,659.20 and 203,435.20 is: 305,014.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,967.20 : 641,659.20 = 203,435.20 : x
  2. Step 2: Convert to fraction form
    427,967.20/641,659.20 = 203,435.20/x
  3. Step 3: Cross multiply
    427,967.20x = 641,659.20 × 203,435.20
  4. Step 4: Simplify right side
    427,967.20x = 130,536,067,683.84
  5. Step 5: Solve for x
    x = 130,536,067,683.84/427,967.20
  6. Step 6: Final answer
    x = 305,014.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.