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Finding the Third Proportional to 310,318.50 and 416,191.50

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Solution

The third proportional to 310,318.50 and 416,191.50 is: 558,185.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,318.50 : 416,191.50 = 416,191.50 : x
  2. Step 2: Convert to fraction form
    310,318.50/416,191.50 = 416,191.50/x
  3. Step 3: Cross multiply
    310,318.50x = 416,191.50 × 416,191.50
  4. Step 4: Simplify right side
    310,318.50x = 173,215,364,672.25
  5. Step 5: Solve for x
    x = 173,215,364,672.25/310,318.50
  6. Step 6: Final answer
    x = 558,185.75

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.