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Finding the Fourth Proportional to 279,780.81, 419,583.73 and 121,850.25

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Solution

The fourth proportional to 279,780.81, 419,583.73 and 121,850.25 is: 182,737.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,780.81 : 419,583.73 = 121,850.25 : x
  2. Step 2: Convert to fraction form
    279,780.81/419,583.73 = 121,850.25/x
  3. Step 3: Cross multiply
    279,780.81x = 419,583.73 × 121,850.25
  4. Step 4: Simplify right side
    279,780.81x = 51,126,382,396.43
  5. Step 5: Solve for x
    x = 51,126,382,396.43/279,780.81
  6. Step 6: Final answer
    x = 182,737.27

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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.