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Finding the Fourth Proportional to 299,436.80, 448,118.40 and 274,553.60

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Solution

The fourth proportional to 299,436.80, 448,118.40 and 274,553.60 is: 410,879.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,436.80 : 448,118.40 = 274,553.60 : x
  2. Step 2: Convert to fraction form
    299,436.80/448,118.40 = 274,553.60/x
  3. Step 3: Cross multiply
    299,436.80x = 448,118.40 × 274,553.60
  4. Step 4: Simplify right side
    299,436.80x = 123,032,519,946.24
  5. Step 5: Solve for x
    x = 123,032,519,946.24/299,436.80
  6. Step 6: Final answer
    x = 410,879.76

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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.