Home / 290,181.12-400,470.72-161,126.40

Finding the Fourth Proportional to 290,181.12, 400,470.72 and 161,126.40

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Solution

The fourth proportional to 290,181.12, 400,470.72 and 161,126.40 is: 222,365.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,181.12 : 400,470.72 = 161,126.40 : x
  2. Step 2: Convert to fraction form
    290,181.12/400,470.72 = 161,126.40/x
  3. Step 3: Cross multiply
    290,181.12x = 400,470.72 × 161,126.40
  4. Step 4: Simplify right side
    290,181.12x = 64,526,405,419.01
  5. Step 5: Solve for x
    x = 64,526,405,419.01/290,181.12
  6. Step 6: Final answer
    x = 222,365.97

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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.