Home / 275,215.20-412,822.80-199,982.40

Finding the Fourth Proportional to 275,215.20, 412,822.80 and 199,982.40

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Solution

The fourth proportional to 275,215.20, 412,822.80 and 199,982.40 is: 299,973.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,215.20 : 412,822.80 = 199,982.40 : x
  2. Step 2: Convert to fraction form
    275,215.20/412,822.80 = 199,982.40/x
  3. Step 3: Cross multiply
    275,215.20x = 412,822.80 × 199,982.40
  4. Step 4: Simplify right side
    275,215.20x = 82,557,294,318.72
  5. Step 5: Solve for x
    x = 82,557,294,318.72/275,215.20
  6. Step 6: Final answer
    x = 299,973.60

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1.5x scale

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.