Home / 215,121.60-322,682.40-136,324.80

Finding the Fourth Proportional to 215,121.60, 322,682.40 and 136,324.80

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Solution

The fourth proportional to 215,121.60, 322,682.40 and 136,324.80 is: 204,487.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,121.60 : 322,682.40 = 136,324.80 : x
  2. Step 2: Convert to fraction form
    215,121.60/322,682.40 = 136,324.80/x
  3. Step 3: Cross multiply
    215,121.60x = 322,682.40 × 136,324.80
  4. Step 4: Simplify right side
    215,121.60x = 43,989,613,643.52
  5. Step 5: Solve for x
    x = 43,989,613,643.52/215,121.60
  6. Step 6: Final answer
    x = 204,487.20

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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.