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Finding the Fourth Proportional to 214,207.80, 321,311.70 and 164,441.40

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Solution

The fourth proportional to 214,207.80, 321,311.70 and 164,441.40 is: 246,662.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,207.80 : 321,311.70 = 164,441.40 : x
  2. Step 2: Convert to fraction form
    214,207.80/321,311.70 = 164,441.40/x
  3. Step 3: Cross multiply
    214,207.80x = 321,311.70 × 164,441.40
  4. Step 4: Simplify right side
    214,207.80x = 52,836,945,784.38
  5. Step 5: Solve for x
    x = 52,836,945,784.38/214,207.80
  6. Step 6: Final answer
    x = 246,662.10

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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.