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Finding the Third Proportional to 189,928.50 and 415,144.50

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Solution

The third proportional to 189,928.50 and 415,144.50 is: 907,420.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,928.50 : 415,144.50 = 415,144.50 : x
  2. Step 2: Convert to fraction form
    189,928.50/415,144.50 = 415,144.50/x
  3. Step 3: Cross multiply
    189,928.50x = 415,144.50 × 415,144.50
  4. Step 4: Simplify right side
    189,928.50x = 172,344,955,880.25
  5. Step 5: Solve for x
    x = 172,344,955,880.25/189,928.50
  6. Step 6: Final answer
    x = 907,420.19

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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.