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Finding the Fourth Proportional to 260,991.63, 360,151.40 and 153,540.90

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Solution

The fourth proportional to 260,991.63, 360,151.40 and 153,540.90 is: 211,876.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,991.63 : 360,151.40 = 153,540.90 : x
  2. Step 2: Convert to fraction form
    260,991.63/360,151.40 = 153,540.90/x
  3. Step 3: Cross multiply
    260,991.63x = 360,151.40 × 153,540.90
  4. Step 4: Simplify right side
    260,991.63x = 55,297,969,324.56
  5. Step 5: Solve for x
    x = 55,297,969,324.56/260,991.63
  6. Step 6: Final answer
    x = 211,876.41

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1.5x scale

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.