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Finding the Third Proportional to 189,899.25 and 291,190.50

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Solution

The third proportional to 189,899.25 and 291,190.50 is: 446,509.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,899.25 : 291,190.50 = 291,190.50 : x
  2. Step 2: Convert to fraction form
    189,899.25/291,190.50 = 291,190.50/x
  3. Step 3: Cross multiply
    189,899.25x = 291,190.50 × 291,190.50
  4. Step 4: Simplify right side
    189,899.25x = 84,791,907,290.25
  5. Step 5: Solve for x
    x = 84,791,907,290.25/189,899.25
  6. Step 6: Final answer
    x = 446,509.96

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.