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Finding the Fourth Proportional to 347,611.49, 522,290.72 and 221,308.12

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Solution

The fourth proportional to 347,611.49, 522,290.72 and 221,308.12 is: 332,518.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,611.49 : 522,290.72 = 221,308.12 : x
  2. Step 2: Convert to fraction form
    347,611.49/522,290.72 = 221,308.12/x
  3. Step 3: Cross multiply
    347,611.49x = 522,290.72 × 221,308.12
  4. Step 4: Simplify right side
    347,611.49x = 115,587,177,336.65
  5. Step 5: Solve for x
    x = 115,587,177,336.65/347,611.49
  6. Step 6: Final answer
    x = 332,518.29

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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.