Home / 255,936.21-384,139.94-129,664.29

Finding the Fourth Proportional to 255,936.21, 384,139.94 and 129,664.29

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Solution

The fourth proportional to 255,936.21, 384,139.94 and 129,664.29 is: 194,615.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,936.21 : 384,139.94 = 129,664.29 : x
  2. Step 2: Convert to fraction form
    255,936.21/384,139.94 = 129,664.29/x
  3. Step 3: Cross multiply
    255,936.21x = 384,139.94 × 129,664.29
  4. Step 4: Simplify right side
    255,936.21x = 49,809,233,372.95
  5. Step 5: Solve for x
    x = 49,809,233,372.95/255,936.21
  6. Step 6: Final answer
    x = 194,615.82

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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.