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Finding the Fourth Proportional to 447,015.77, 670,451.63 and 122,728.22

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Solution

The fourth proportional to 447,015.77, 670,451.63 and 122,728.22 is: 184,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,015.77 : 670,451.63 = 122,728.22 : x
  2. Step 2: Convert to fraction form
    447,015.77/670,451.63 = 122,728.22/x
  3. Step 3: Cross multiply
    447,015.77x = 670,451.63 × 122,728.22
  4. Step 4: Simplify right side
    447,015.77x = 82,283,331,180.10
  5. Step 5: Solve for x
    x = 82,283,331,180.10/447,015.77
  6. Step 6: Final answer
    x = 184,072.55

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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.