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Finding the Fourth Proportional to 290,959.26, 401,519.94 and 163,634.88

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Solution

The fourth proportional to 290,959.26, 401,519.94 and 163,634.88 is: 225,813.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,959.26 : 401,519.94 = 163,634.88 : x
  2. Step 2: Convert to fraction form
    290,959.26/401,519.94 = 163,634.88/x
  3. Step 3: Cross multiply
    290,959.26x = 401,519.94 × 163,634.88
  4. Step 4: Simplify right side
    290,959.26x = 65,702,667,199.51
  5. Step 5: Solve for x
    x = 65,702,667,199.51/290,959.26
  6. Step 6: Final answer
    x = 225,813.98

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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.