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Finding the Fourth Proportional to 275,734.40, 412,910.40 and 220,438.40

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Solution

The fourth proportional to 275,734.40, 412,910.40 and 220,438.40 is: 330,105.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,734.40 : 412,910.40 = 220,438.40 : x
  2. Step 2: Convert to fraction form
    275,734.40/412,910.40 = 220,438.40/x
  3. Step 3: Cross multiply
    275,734.40x = 412,910.40 × 220,438.40
  4. Step 4: Simplify right side
    275,734.40x = 91,021,307,919.36
  5. Step 5: Solve for x
    x = 91,021,307,919.36/275,734.40
  6. Step 6: Final answer
    x = 330,105.01

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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.