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Finding the Fourth Proportional to 270,428.75, 404,812.74 and 170,119.28

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Solution

The fourth proportional to 270,428.75, 404,812.74 and 170,119.28 is: 254,656.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,428.75 : 404,812.74 = 170,119.28 : x
  2. Step 2: Convert to fraction form
    270,428.75/404,812.74 = 170,119.28/x
  3. Step 3: Cross multiply
    270,428.75x = 404,812.74 × 170,119.28
  4. Step 4: Simplify right side
    270,428.75x = 68,866,449,839.56
  5. Step 5: Solve for x
    x = 68,866,449,839.56/270,428.75
  6. Step 6: Final answer
    x = 254,656.54

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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.