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Finding the Fourth Proportional to 221,662.45, 311,114.75 and 221,662.45

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Solution

The fourth proportional to 221,662.45, 311,114.75 and 221,662.45 is: 311,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,662.45 : 311,114.75 = 221,662.45 : x
  2. Step 2: Convert to fraction form
    221,662.45/311,114.75 = 221,662.45/x
  3. Step 3: Cross multiply
    221,662.45x = 311,114.75 × 221,662.45
  4. Step 4: Simplify right side
    221,662.45x = 68,962,457,716.14
  5. Step 5: Solve for x
    x = 68,962,457,716.14/221,662.45
  6. Step 6: Final answer
    x = 311,114.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.