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Finding the Third Proportional to 260,673.75 and 402,979.50

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Solution

The third proportional to 260,673.75 and 402,979.50 is: 622,972.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,673.75 : 402,979.50 = 402,979.50 : x
  2. Step 2: Convert to fraction form
    260,673.75/402,979.50 = 402,979.50/x
  3. Step 3: Cross multiply
    260,673.75x = 402,979.50 × 402,979.50
  4. Step 4: Simplify right side
    260,673.75x = 162,392,477,420.25
  5. Step 5: Solve for x
    x = 162,392,477,420.25/260,673.75
  6. Step 6: Final answer
    x = 622,972.12

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.