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Finding the Fourth Proportional to 221,406.45, 331,617.60 and 221,406.45

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Solution

The fourth proportional to 221,406.45, 331,617.60 and 221,406.45 is: 331,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,406.45 : 331,617.60 = 221,406.45 : x
  2. Step 2: Convert to fraction form
    221,406.45/331,617.60 = 221,406.45/x
  3. Step 3: Cross multiply
    221,406.45x = 331,617.60 × 221,406.45
  4. Step 4: Simplify right side
    221,406.45x = 73,422,275,573.52
  5. Step 5: Solve for x
    x = 73,422,275,573.52/221,406.45
  6. Step 6: Final answer
    x = 331,617.60

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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.