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Finding the Third Proportional to 144,941.25 and 311,316.75

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Solution

The third proportional to 144,941.25 and 311,316.75 is: 668,671.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,941.25 : 311,316.75 = 311,316.75 : x
  2. Step 2: Convert to fraction form
    144,941.25/311,316.75 = 311,316.75/x
  3. Step 3: Cross multiply
    144,941.25x = 311,316.75 × 311,316.75
  4. Step 4: Simplify right side
    144,941.25x = 96,918,118,830.56
  5. Step 5: Solve for x
    x = 96,918,118,830.56/144,941.25
  6. Step 6: Final answer
    x = 668,671.75

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.