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Finding the Fourth Proportional to 214,573.90, 321,890.92 and 64,797.20

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Solution

The fourth proportional to 214,573.90, 321,890.92 and 64,797.20 is: 97,204.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,573.90 : 321,890.92 = 64,797.20 : x
  2. Step 2: Convert to fraction form
    214,573.90/321,890.92 = 64,797.20/x
  3. Step 3: Cross multiply
    214,573.90x = 321,890.92 × 64,797.20
  4. Step 4: Simplify right side
    214,573.90x = 20,857,630,321.42
  5. Step 5: Solve for x
    x = 20,857,630,321.42/214,573.90
  6. Step 6: Final answer
    x = 97,204.88

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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.