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Finding the Fourth Proportional to 290,570.82, 400,825.83 and 270,020.85

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Solution

The fourth proportional to 290,570.82, 400,825.83 and 270,020.85 is: 372,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,570.82 : 400,825.83 = 270,020.85 : x
  2. Step 2: Convert to fraction form
    290,570.82/400,825.83 = 270,020.85/x
  3. Step 3: Cross multiply
    290,570.82x = 400,825.83 × 270,020.85
  4. Step 4: Simplify right side
    290,570.82x = 108,231,331,318.56
  5. Step 5: Solve for x
    x = 108,231,331,318.56/290,570.82
  6. Step 6: Final answer
    x = 372,478.32

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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.