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Finding the Third Proportional to 143,479.50 and 312,793.88

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Solution

The third proportional to 143,479.50 and 312,793.88 is: 681,909.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,479.50 : 312,793.88 = 312,793.88 : x
  2. Step 2: Convert to fraction form
    143,479.50/312,793.88 = 312,793.88/x
  3. Step 3: Cross multiply
    143,479.50x = 312,793.88 × 312,793.88
  4. Step 4: Simplify right side
    143,479.50x = 97,840,008,237.52
  5. Step 5: Solve for x
    x = 97,840,008,237.52/143,479.50
  6. Step 6: Final answer
    x = 681,909.32

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.