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Finding the Fourth Proportional to 279,409.89, 419,110.73 and 69,047.83

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Solution

The fourth proportional to 279,409.89, 419,110.73 and 69,047.83 is: 103,570.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,409.89 : 419,110.73 = 69,047.83 : x
  2. Step 2: Convert to fraction form
    279,409.89/419,110.73 = 69,047.83/x
  3. Step 3: Cross multiply
    279,409.89x = 419,110.73 × 69,047.83
  4. Step 4: Simplify right side
    279,409.89x = 28,938,686,436.22
  5. Step 5: Solve for x
    x = 28,938,686,436.22/279,409.89
  6. Step 6: Final answer
    x = 103,570.73

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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.