Home / 290,945.46-401,276.76-199,119.06

Finding the Fourth Proportional to 290,945.46, 401,276.76 and 199,119.06

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Solution

The fourth proportional to 290,945.46, 401,276.76 and 199,119.06 is: 274,628.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,945.46 : 401,276.76 = 199,119.06 : x
  2. Step 2: Convert to fraction form
    290,945.46/401,276.76 = 199,119.06/x
  3. Step 3: Cross multiply
    290,945.46x = 401,276.76 × 199,119.06
  4. Step 4: Simplify right side
    290,945.46x = 79,901,851,251.05
  5. Step 5: Solve for x
    x = 79,901,851,251.05/290,945.46
  6. Step 6: Final answer
    x = 274,628.28

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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.