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Finding the Fourth Proportional to 143,311.21, 214,966.80 and 44,815.21

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Solution

The fourth proportional to 143,311.21, 214,966.80 and 44,815.21 is: 67,222.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,311.21 : 214,966.80 = 44,815.21 : x
  2. Step 2: Convert to fraction form
    143,311.21/214,966.80 = 44,815.21/x
  3. Step 3: Cross multiply
    143,311.21x = 214,966.80 × 44,815.21
  4. Step 4: Simplify right side
    143,311.21x = 9,633,782,285.03
  5. Step 5: Solve for x
    x = 9,633,782,285.03/143,311.21
  6. Step 6: Final answer
    x = 67,222.81

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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.