Home / 318,057.97-438,983.82-188,971.60

Finding the Fourth Proportional to 318,057.97, 438,983.82 and 188,971.60

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Solution

The fourth proportional to 318,057.97, 438,983.82 and 188,971.60 is: 260,818.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,057.97 : 438,983.82 = 188,971.60 : x
  2. Step 2: Convert to fraction form
    318,057.97/438,983.82 = 188,971.60/x
  3. Step 3: Cross multiply
    318,057.97x = 438,983.82 × 188,971.60
  4. Step 4: Simplify right side
    318,057.97x = 82,955,474,839.51
  5. Step 5: Solve for x
    x = 82,955,474,839.51/318,057.97
  6. Step 6: Final answer
    x = 260,818.73

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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.