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Finding the Fourth Proportional to 274,013.40, 411,063.30 and 87,043.80

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Solution

The fourth proportional to 274,013.40, 411,063.30 and 87,043.80 is: 130,579.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,013.40 : 411,063.30 = 87,043.80 : x
  2. Step 2: Convert to fraction form
    274,013.40/411,063.30 = 87,043.80/x
  3. Step 3: Cross multiply
    274,013.40x = 411,063.30 × 87,043.80
  4. Step 4: Simplify right side
    274,013.40x = 35,780,511,672.54
  5. Step 5: Solve for x
    x = 35,780,511,672.54/274,013.40
  6. Step 6: Final answer
    x = 130,579.42

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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.