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Finding the Fourth Proportional to 300,012.14, 450,018.65 and 122,519.16

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Solution

The fourth proportional to 300,012.14, 450,018.65 and 122,519.16 is: 183,778.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,012.14 : 450,018.65 = 122,519.16 : x
  2. Step 2: Convert to fraction form
    300,012.14/450,018.65 = 122,519.16/x
  3. Step 3: Cross multiply
    300,012.14x = 450,018.65 × 122,519.16
  4. Step 4: Simplify right side
    300,012.14x = 55,135,906,982.33
  5. Step 5: Solve for x
    x = 55,135,906,982.33/300,012.14
  6. Step 6: Final answer
    x = 183,778.92

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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.