Home / 270,629.28-405,815.76-81,016.56

Finding the Fourth Proportional to 270,629.28, 405,815.76 and 81,016.56

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Solution

The fourth proportional to 270,629.28, 405,815.76 and 81,016.56 is: 121,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,629.28 : 405,815.76 = 81,016.56 : x
  2. Step 2: Convert to fraction form
    270,629.28/405,815.76 = 81,016.56/x
  3. Step 3: Cross multiply
    270,629.28x = 405,815.76 × 81,016.56
  4. Step 4: Simplify right side
    270,629.28x = 32,877,796,868.99
  5. Step 5: Solve for x
    x = 32,877,796,868.99/270,629.28
  6. Step 6: Final answer
    x = 121,486.47

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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.