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Finding the Fourth Proportional to 290,662.12, 401,100.82 and 169,814.60

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Solution

The fourth proportional to 290,662.12, 401,100.82 and 169,814.60 is: 234,336.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,662.12 : 401,100.82 = 169,814.60 : x
  2. Step 2: Convert to fraction form
    290,662.12/401,100.82 = 169,814.60/x
  3. Step 3: Cross multiply
    290,662.12x = 401,100.82 × 169,814.60
  4. Step 4: Simplify right side
    290,662.12x = 68,112,775,307.97
  5. Step 5: Solve for x
    x = 68,112,775,307.97/290,662.12
  6. Step 6: Final answer
    x = 234,336.61

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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.