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Finding the Fourth Proportional to 275,736.40, 412,913.40 and 220,440.40

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Solution

The fourth proportional to 275,736.40, 412,913.40 and 220,440.40 is: 330,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,736.40 : 412,913.40 = 220,440.40 : x
  2. Step 2: Convert to fraction form
    275,736.40/412,913.40 = 220,440.40/x
  3. Step 3: Cross multiply
    275,736.40x = 412,913.40 × 220,440.40
  4. Step 4: Simplify right side
    275,736.40x = 91,022,795,061.36
  5. Step 5: Solve for x
    x = 91,022,795,061.36/275,736.40
  6. Step 6: Final answer
    x = 330,108.01

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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.