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Finding the Fourth Proportional to 300,619.50, 450,959.13 and 111,129.54

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Solution

The fourth proportional to 300,619.50, 450,959.13 and 111,129.54 is: 166,705.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,619.50 : 450,959.13 = 111,129.54 : x
  2. Step 2: Convert to fraction form
    300,619.50/450,959.13 = 111,129.54/x
  3. Step 3: Cross multiply
    300,619.50x = 450,959.13 × 111,129.54
  4. Step 4: Simplify right side
    300,619.50x = 50,114,880,675.70
  5. Step 5: Solve for x
    x = 50,114,880,675.70/300,619.50
  6. Step 6: Final answer
    x = 166,705.36

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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.