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Finding the Fourth Proportional to 290,968.64, 401,476.52 and 170,086.54

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Solution

The fourth proportional to 290,968.64, 401,476.52 and 170,086.54 is: 234,684.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,968.64 : 401,476.52 = 170,086.54 : x
  2. Step 2: Convert to fraction form
    290,968.64/401,476.52 = 170,086.54/x
  3. Step 3: Cross multiply
    290,968.64x = 401,476.52 × 170,086.54
  4. Step 4: Simplify right side
    290,968.64x = 68,285,752,178.04
  5. Step 5: Solve for x
    x = 68,285,752,178.04/290,968.64
  6. Step 6: Final answer
    x = 234,684.23

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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.