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Finding the Fourth Proportional to 275,406.90, 412,571.79 and 190,004.55

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Solution

The fourth proportional to 275,406.90, 412,571.79 and 190,004.55 is: 284,635.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,406.90 : 412,571.79 = 190,004.55 : x
  2. Step 2: Convert to fraction form
    275,406.90/412,571.79 = 190,004.55/x
  3. Step 3: Cross multiply
    275,406.90x = 412,571.79 × 190,004.55
  4. Step 4: Simplify right side
    275,406.90x = 78,390,517,301.64
  5. Step 5: Solve for x
    x = 78,390,517,301.64/275,406.90
  6. Step 6: Final answer
    x = 284,635.27

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1.5x scale

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.