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Finding the Fourth Proportional to 275,959.04, 380,824.54 and 155,105.42

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Solution

The fourth proportional to 275,959.04, 380,824.54 and 155,105.42 is: 214,046.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,959.04 : 380,824.54 = 155,105.42 : x
  2. Step 2: Convert to fraction form
    275,959.04/380,824.54 = 155,105.42/x
  3. Step 3: Cross multiply
    275,959.04x = 380,824.54 × 155,105.42
  4. Step 4: Simplify right side
    275,959.04x = 59,067,947,931.12
  5. Step 5: Solve for x
    x = 59,067,947,931.12/275,959.04
  6. Step 6: Final answer
    x = 214,046.07

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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.