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Finding the Fourth Proportional to 221,219.48, 331,829.04 and 55,007.48

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Solution

The fourth proportional to 221,219.48, 331,829.04 and 55,007.48 is: 82,511.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,219.48 : 331,829.04 = 55,007.48 : x
  2. Step 2: Convert to fraction form
    221,219.48/331,829.04 = 55,007.48/x
  3. Step 3: Cross multiply
    221,219.48x = 331,829.04 × 55,007.48
  4. Step 4: Simplify right side
    221,219.48x = 18,253,079,281.22
  5. Step 5: Solve for x
    x = 18,253,079,281.22/221,219.48
  6. Step 6: Final answer
    x = 82,511.18

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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.