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Finding the Fourth Proportional to 220,509.96, 304,326.34 and 129,894.44

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Solution

The fourth proportional to 220,509.96, 304,326.34 and 129,894.44 is: 179,267.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,509.96 : 304,326.34 = 129,894.44 : x
  2. Step 2: Convert to fraction form
    220,509.96/304,326.34 = 129,894.44/x
  3. Step 3: Cross multiply
    220,509.96x = 304,326.34 × 129,894.44
  4. Step 4: Simplify right side
    220,509.96x = 39,530,299,511.55
  5. Step 5: Solve for x
    x = 39,530,299,511.55/220,509.96
  6. Step 6: Final answer
    x = 179,267.64

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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.