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Finding the Third Proportional to 310,929.75 and 659,225.25

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Solution

The third proportional to 310,929.75 and 659,225.25 is: 1,397,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,929.75 : 659,225.25 = 659,225.25 : x
  2. Step 2: Convert to fraction form
    310,929.75/659,225.25 = 659,225.25/x
  3. Step 3: Cross multiply
    310,929.75x = 659,225.25 × 659,225.25
  4. Step 4: Simplify right side
    310,929.75x = 434,577,930,237.56
  5. Step 5: Solve for x
    x = 434,577,930,237.56/310,929.75
  6. Step 6: Final answer
    x = 1,397,672.40

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.