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Finding the Fourth Proportional to 216,443.63, 324,656.21 and 211,375.25

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Solution

The fourth proportional to 216,443.63, 324,656.21 and 211,375.25 is: 317,053.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,443.63 : 324,656.21 = 211,375.25 : x
  2. Step 2: Convert to fraction form
    216,443.63/324,656.21 = 211,375.25/x
  3. Step 3: Cross multiply
    216,443.63x = 324,656.21 × 211,375.25
  4. Step 4: Simplify right side
    216,443.63x = 68,624,284,872.65
  5. Step 5: Solve for x
    x = 68,624,284,872.65/216,443.63
  6. Step 6: Final answer
    x = 317,053.85

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1.5x scale

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.