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Finding the Fourth Proportional to 279,935.93, 419,976.29 and 80,270.93

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Solution

The fourth proportional to 279,935.93, 419,976.29 and 80,270.93 is: 120,427.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,935.93 : 419,976.29 = 80,270.93 : x
  2. Step 2: Convert to fraction form
    279,935.93/419,976.29 = 80,270.93/x
  3. Step 3: Cross multiply
    279,935.93x = 419,976.29 × 80,270.93
  4. Step 4: Simplify right side
    279,935.93x = 33,711,888,626.87
  5. Step 5: Solve for x
    x = 33,711,888,626.87/279,935.93
  6. Step 6: Final answer
    x = 120,427.16

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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.