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Finding the Fourth Proportional to 281,036.70, 421,555.05 and 276,371.10

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Solution

The fourth proportional to 281,036.70, 421,555.05 and 276,371.10 is: 414,556.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,036.70 : 421,555.05 = 276,371.10 : x
  2. Step 2: Convert to fraction form
    281,036.70/421,555.05 = 276,371.10/x
  3. Step 3: Cross multiply
    281,036.70x = 421,555.05 × 276,371.10
  4. Step 4: Simplify right side
    281,036.70x = 116,505,632,879.06
  5. Step 5: Solve for x
    x = 116,505,632,879.06/281,036.70
  6. Step 6: Final answer
    x = 414,556.65

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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.