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Finding the Fourth Proportional to 290,262.81, 400,575.98 and 161,201.88

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Solution

The fourth proportional to 290,262.81, 400,575.98 and 161,201.88 is: 222,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,262.81 : 400,575.98 = 161,201.88 : x
  2. Step 2: Convert to fraction form
    290,262.81/400,575.98 = 161,201.88/x
  3. Step 3: Cross multiply
    290,262.81x = 400,575.98 × 161,201.88
  4. Step 4: Simplify right side
    290,262.81x = 64,573,598,249.95
  5. Step 5: Solve for x
    x = 64,573,598,249.95/290,262.81
  6. Step 6: Final answer
    x = 222,465.97

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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.