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Finding the Third Proportional to 139,318.50 and 305,346

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Solution

The third proportional to 139,318.50 and 305,346 is: 669,230.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,318.50 : 305,346 = 305,346 : x
  2. Step 2: Convert to fraction form
    139,318.50/305,346 = 305,346/x
  3. Step 3: Cross multiply
    139,318.50x = 305,346 × 305,346
  4. Step 4: Simplify right side
    139,318.50x = 93,236,179,716
  5. Step 5: Solve for x
    x = 93,236,179,716/139,318.50
  6. Step 6: Final answer
    x = 669,230.43

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.