Home / 290,084.20-400,309.86-161,015.09

Finding the Fourth Proportional to 290,084.20, 400,309.86 and 161,015.09

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Solution

The fourth proportional to 290,084.20, 400,309.86 and 161,015.09 is: 222,197.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,084.20 : 400,309.86 = 161,015.09 : x
  2. Step 2: Convert to fraction form
    290,084.20/400,309.86 = 161,015.09/x
  3. Step 3: Cross multiply
    290,084.20x = 400,309.86 × 161,015.09
  4. Step 4: Simplify right side
    290,084.20x = 64,455,926,738.04
  5. Step 5: Solve for x
    x = 64,455,926,738.04/290,084.20
  6. Step 6: Final answer
    x = 222,197.30

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1.5x scale

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.