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Finding the Fourth Proportional to 274,287.28, 378,551.46 and 153,435.28

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Solution

The fourth proportional to 274,287.28, 378,551.46 and 153,435.28 is: 211,760.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,287.28 : 378,551.46 = 153,435.28 : x
  2. Step 2: Convert to fraction form
    274,287.28/378,551.46 = 153,435.28/x
  3. Step 3: Cross multiply
    274,287.28x = 378,551.46 × 153,435.28
  4. Step 4: Simplify right side
    274,287.28x = 58,083,149,259.51
  5. Step 5: Solve for x
    x = 58,083,149,259.51/274,287.28
  6. Step 6: Final answer
    x = 211,760.27

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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.