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Finding the Fourth Proportional to 225,737.63, 311,515.83 and 123,768.75

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Solution

The fourth proportional to 225,737.63, 311,515.83 and 123,768.75 is: 170,799.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,737.63 : 311,515.83 = 123,768.75 : x
  2. Step 2: Convert to fraction form
    225,737.63/311,515.83 = 123,768.75/x
  3. Step 3: Cross multiply
    225,737.63x = 311,515.83 × 123,768.75
  4. Step 4: Simplify right side
    225,737.63x = 38,555,924,884.31
  5. Step 5: Solve for x
    x = 38,555,924,884.31/225,737.63
  6. Step 6: Final answer
    x = 170,799.73

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1.5x scale

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.