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Finding the Fourth Proportional to 279,702.40, 419,553.60 and 80,034.70

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Solution

The fourth proportional to 279,702.40, 419,553.60 and 80,034.70 is: 120,052.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,702.40 : 419,553.60 = 80,034.70 : x
  2. Step 2: Convert to fraction form
    279,702.40/419,553.60 = 80,034.70/x
  3. Step 3: Cross multiply
    279,702.40x = 419,553.60 × 80,034.70
  4. Step 4: Simplify right side
    279,702.40x = 33,578,846,509.92
  5. Step 5: Solve for x
    x = 33,578,846,509.92/279,702.40
  6. Step 6: Final answer
    x = 120,052.05

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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.