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Finding the Third Proportional to 260,806.50 and 316,780.50

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Solution

The third proportional to 260,806.50 and 316,780.50 is: 384,767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,806.50 : 316,780.50 = 316,780.50 : x
  2. Step 2: Convert to fraction form
    260,806.50/316,780.50 = 316,780.50/x
  3. Step 3: Cross multiply
    260,806.50x = 316,780.50 × 316,780.50
  4. Step 4: Simplify right side
    260,806.50x = 100,349,885,180.25
  5. Step 5: Solve for x
    x = 100,349,885,180.25/260,806.50
  6. Step 6: Final answer
    x = 384,767.58

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Why These Related Problems?

These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.