Home / 397,964.80-597,638.40-211,340.80

Finding the Fourth Proportional to 397,964.80, 597,638.40 and 211,340.80

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Solution

The fourth proportional to 397,964.80, 597,638.40 and 211,340.80 is: 317,378.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,964.80 : 597,638.40 = 211,340.80 : x
  2. Step 2: Convert to fraction form
    397,964.80/597,638.40 = 211,340.80/x
  3. Step 3: Cross multiply
    397,964.80x = 597,638.40 × 211,340.80
  4. Step 4: Simplify right side
    397,964.80x = 126,305,377,566.72
  5. Step 5: Solve for x
    x = 126,305,377,566.72/397,964.80
  6. Step 6: Final answer
    x = 317,378.26

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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.