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Finding the Fourth Proportional to 400,611.50, 552,843.90 and 221,763.50

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Solution

The fourth proportional to 400,611.50, 552,843.90 and 221,763.50 is: 306,033.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,611.50 : 552,843.90 = 221,763.50 : x
  2. Step 2: Convert to fraction form
    400,611.50/552,843.90 = 221,763.50/x
  3. Step 3: Cross multiply
    400,611.50x = 552,843.90 × 221,763.50
  4. Step 4: Simplify right side
    400,611.50x = 122,600,598,217.65
  5. Step 5: Solve for x
    x = 122,600,598,217.65/400,611.50
  6. Step 6: Final answer
    x = 306,033.65

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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.