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Finding the Fourth Proportional to 290,605.91, 400,896.51 and 250,249.61

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Solution

The fourth proportional to 290,605.91, 400,896.51 and 250,249.61 is: 345,224.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,605.91 : 400,896.51 = 250,249.61 : x
  2. Step 2: Convert to fraction form
    290,605.91/400,896.51 = 250,249.61/x
  3. Step 3: Cross multiply
    290,605.91x = 400,896.51 × 250,249.61
  4. Step 4: Simplify right side
    290,605.91x = 100,324,195,341.67
  5. Step 5: Solve for x
    x = 100,324,195,341.67/290,605.91
  6. Step 6: Final answer
    x = 345,224.21

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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.