Home / 306,208.31-422,581.55-170,256.09

Finding the Fourth Proportional to 306,208.31, 422,581.55 and 170,256.09

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Solution

The fourth proportional to 306,208.31, 422,581.55 and 170,256.09 is: 234,961.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,208.31 : 422,581.55 = 170,256.09 : x
  2. Step 2: Convert to fraction form
    306,208.31/422,581.55 = 170,256.09/x
  3. Step 3: Cross multiply
    306,208.31x = 422,581.55 × 170,256.09
  4. Step 4: Simplify right side
    306,208.31x = 71,947,082,409.14
  5. Step 5: Solve for x
    x = 71,947,082,409.14/306,208.31
  6. Step 6: Final answer
    x = 234,961.23

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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.