Home / 309,896.09-464,782.93-85,198.58

Finding the Fourth Proportional to 309,896.09, 464,782.93 and 85,198.58

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Solution

The fourth proportional to 309,896.09, 464,782.93 and 85,198.58 is: 127,781.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,896.09 : 464,782.93 = 85,198.58 : x
  2. Step 2: Convert to fraction form
    309,896.09/464,782.93 = 85,198.58/x
  3. Step 3: Cross multiply
    309,896.09x = 464,782.93 × 85,198.58
  4. Step 4: Simplify right side
    309,896.09x = 39,598,845,644.24
  5. Step 5: Solve for x
    x = 39,598,845,644.24/309,896.09
  6. Step 6: Final answer
    x = 127,781.04

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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.