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Finding the Fourth Proportional to 219,404.61, 329,069.28 and 69,611.52

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Solution

The fourth proportional to 219,404.61, 329,069.28 and 69,611.52 is: 104,405.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,404.61 : 329,069.28 = 69,611.52 : x
  2. Step 2: Convert to fraction form
    219,404.61/329,069.28 = 69,611.52/x
  3. Step 3: Cross multiply
    219,404.61x = 329,069.28 × 69,611.52
  4. Step 4: Simplify right side
    219,404.61x = 22,907,012,766.11
  5. Step 5: Solve for x
    x = 22,907,012,766.11/219,404.61
  6. Step 6: Final answer
    x = 104,405.34

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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.