Home / 252,711.37-378,940.26-84,172.42

Finding the Fourth Proportional to 252,711.37, 378,940.26 and 84,172.42

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Solution

The fourth proportional to 252,711.37, 378,940.26 and 84,172.42 is: 126,216.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,711.37 : 378,940.26 = 84,172.42 : x
  2. Step 2: Convert to fraction form
    252,711.37/378,940.26 = 84,172.42/x
  3. Step 3: Cross multiply
    252,711.37x = 378,940.26 × 84,172.42
  4. Step 4: Simplify right side
    252,711.37x = 31,896,318,719.63
  5. Step 5: Solve for x
    x = 31,896,318,719.63/252,711.37
  6. Step 6: Final answer
    x = 126,216.40

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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.