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Finding the Fourth Proportional to 290,878.53, 436,016.79 and 110,915.51

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Solution

The fourth proportional to 290,878.53, 436,016.79 and 110,915.51 is: 166,258.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,878.53 : 436,016.79 = 110,915.51 : x
  2. Step 2: Convert to fraction form
    290,878.53/436,016.79 = 110,915.51/x
  3. Step 3: Cross multiply
    290,878.53x = 436,016.79 × 110,915.51
  4. Step 4: Simplify right side
    290,878.53x = 48,361,022,451.33
  5. Step 5: Solve for x
    x = 48,361,022,451.33/290,878.53
  6. Step 6: Final answer
    x = 166,258.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.