Home / 290,728.45-401,170.38-161,634.51

Finding the Fourth Proportional to 290,728.45, 401,170.38 and 161,634.51

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Solution

The fourth proportional to 290,728.45, 401,170.38 and 161,634.51 is: 223,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,728.45 : 401,170.38 = 161,634.51 : x
  2. Step 2: Convert to fraction form
    290,728.45/401,170.38 = 161,634.51/x
  3. Step 3: Cross multiply
    290,728.45x = 401,170.38 × 161,634.51
  4. Step 4: Simplify right side
    290,728.45x = 64,842,976,406.39
  5. Step 5: Solve for x
    x = 64,842,976,406.39/290,728.45
  6. Step 6: Final answer
    x = 223,036.23

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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.