Home / 427,866.22-641,872.23-214,735.78

Finding the Fourth Proportional to 427,866.22, 641,872.23 and 214,735.78

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Solution

The fourth proportional to 427,866.22, 641,872.23 and 214,735.78 is: 322,140.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,866.22 : 641,872.23 = 214,735.78 : x
  2. Step 2: Convert to fraction form
    427,866.22/641,872.23 = 214,735.78/x
  3. Step 3: Cross multiply
    427,866.22x = 641,872.23 × 214,735.78
  4. Step 4: Simplify right side
    427,866.22x = 137,832,933,969.39
  5. Step 5: Solve for x
    x = 137,832,933,969.39/427,866.22
  6. Step 6: Final answer
    x = 322,140.26

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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.