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Finding the Fourth Proportional to 536,912.69, 805,738.77 and 221,369.60

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Solution

The fourth proportional to 536,912.69, 805,738.77 and 221,369.60 is: 332,206.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,912.69 : 805,738.77 = 221,369.60 : x
  2. Step 2: Convert to fraction form
    536,912.69/805,738.77 = 221,369.60/x
  3. Step 3: Cross multiply
    536,912.69x = 805,738.77 × 221,369.60
  4. Step 4: Simplify right side
    536,912.69x = 178,366,069,219.39
  5. Step 5: Solve for x
    x = 178,366,069,219.39/536,912.69
  6. Step 6: Final answer
    x = 332,206.84

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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.