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Finding the Fourth Proportional to 221,539.82, 305,696.94 and 126,048.12

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Solution

The fourth proportional to 221,539.82, 305,696.94 and 126,048.12 is: 173,930.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,539.82 : 305,696.94 = 126,048.12 : x
  2. Step 2: Convert to fraction form
    221,539.82/305,696.94 = 126,048.12/x
  3. Step 3: Cross multiply
    221,539.82x = 305,696.94 × 126,048.12
  4. Step 4: Simplify right side
    221,539.82x = 38,532,524,576.75
  5. Step 5: Solve for x
    x = 38,532,524,576.75/221,539.82
  6. Step 6: Final answer
    x = 173,930.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.