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Finding the Fourth Proportional to 299,483.73, 449,761.01 and 287,443.35

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Solution

The fourth proportional to 299,483.73, 449,761.01 and 287,443.35 is: 431,678.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,483.73 : 449,761.01 = 287,443.35 : x
  2. Step 2: Convert to fraction form
    299,483.73/449,761.01 = 287,443.35/x
  3. Step 3: Cross multiply
    299,483.73x = 449,761.01 × 287,443.35
  4. Step 4: Simplify right side
    299,483.73x = 129,280,809,976.57
  5. Step 5: Solve for x
    x = 129,280,809,976.57/299,483.73
  6. Step 6: Final answer
    x = 431,678.91

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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.