Home / 308,736.45-426,076.07-172,786.05

Finding the Fourth Proportional to 308,736.45, 426,076.07 and 172,786.05

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Solution

The fourth proportional to 308,736.45, 426,076.07 and 172,786.05 is: 238,455.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,736.45 : 426,076.07 = 172,786.05 : x
  2. Step 2: Convert to fraction form
    308,736.45/426,076.07 = 172,786.05/x
  3. Step 3: Cross multiply
    308,736.45x = 426,076.07 × 172,786.05
  4. Step 4: Simplify right side
    308,736.45x = 73,620,000,270.89
  5. Step 5: Solve for x
    x = 73,620,000,270.89/308,736.45
  6. Step 6: Final answer
    x = 238,455.81

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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.