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Finding the Fourth Proportional to 207,305.22, 310,956.77 and 80,958.30

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Solution

The fourth proportional to 207,305.22, 310,956.77 and 80,958.30 is: 121,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,305.22 : 310,956.77 = 80,958.30 : x
  2. Step 2: Convert to fraction form
    207,305.22/310,956.77 = 80,958.30/x
  3. Step 3: Cross multiply
    207,305.22x = 310,956.77 × 80,958.30
  4. Step 4: Simplify right side
    207,305.22x = 25,174,529,917.91
  5. Step 5: Solve for x
    x = 25,174,529,917.91/207,305.22
  6. Step 6: Final answer
    x = 121,437.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.