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Finding the Fourth Proportional to 274,134.43, 378,287.99 and 153,285.67

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Solution

The fourth proportional to 274,134.43, 378,287.99 and 153,285.67 is: 211,524.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,134.43 : 378,287.99 = 153,285.67 : x
  2. Step 2: Convert to fraction form
    274,134.43/378,287.99 = 153,285.67/x
  3. Step 3: Cross multiply
    274,134.43x = 378,287.99 × 153,285.67
  4. Step 4: Simplify right side
    274,134.43x = 57,986,127,233.68
  5. Step 5: Solve for x
    x = 57,986,127,233.68/274,134.43
  6. Step 6: Final answer
    x = 211,524.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.