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Finding the Fourth Proportional to 290,976.71, 401,530.77 and 161,910.90

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Solution

The fourth proportional to 290,976.71, 401,530.77 and 161,910.90 is: 223,427.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,976.71 : 401,530.77 = 161,910.90 : x
  2. Step 2: Convert to fraction form
    290,976.71/401,530.77 = 161,910.90/x
  3. Step 3: Cross multiply
    290,976.71x = 401,530.77 × 161,910.90
  4. Step 4: Simplify right side
    290,976.71x = 65,012,208,348.39
  5. Step 5: Solve for x
    x = 65,012,208,348.39/290,976.71
  6. Step 6: Final answer
    x = 223,427.54

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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.