Home / 252,106.28-378,233.32-81,324.58

Finding the Fourth Proportional to 252,106.28, 378,233.32 and 81,324.58

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Solution

The fourth proportional to 252,106.28, 378,233.32 and 81,324.58 is: 122,010.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,106.28 : 378,233.32 = 81,324.58 : x
  2. Step 2: Convert to fraction form
    252,106.28/378,233.32 = 81,324.58/x
  3. Step 3: Cross multiply
    252,106.28x = 378,233.32 × 81,324.58
  4. Step 4: Simplify right side
    252,106.28x = 30,759,665,484.38
  5. Step 5: Solve for x
    x = 30,759,665,484.38/252,106.28
  6. Step 6: Final answer
    x = 122,010.71

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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.