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Finding the Fourth Proportional to 300,154.49, 450,065.58 and 122,786.09

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Solution

The fourth proportional to 300,154.49, 450,065.58 and 122,786.09 is: 184,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,154.49 : 450,065.58 = 122,786.09 : x
  2. Step 2: Convert to fraction form
    300,154.49/450,065.58 = 122,786.09/x
  3. Step 3: Cross multiply
    300,154.49x = 450,065.58 × 122,786.09
  4. Step 4: Simplify right side
    300,154.49x = 55,261,792,811.78
  5. Step 5: Solve for x
    x = 55,261,792,811.78/300,154.49
  6. Step 6: Final answer
    x = 184,111.16

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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.