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Finding the Fourth Proportional to 257,494.10, 386,241.87 and 80,027.06

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Solution

The fourth proportional to 257,494.10, 386,241.87 and 80,027.06 is: 120,040.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,494.10 : 386,241.87 = 80,027.06 : x
  2. Step 2: Convert to fraction form
    257,494.10/386,241.87 = 80,027.06/x
  3. Step 3: Cross multiply
    257,494.10x = 386,241.87 × 80,027.06
  4. Step 4: Simplify right side
    257,494.10x = 30,909,801,305.00
  5. Step 5: Solve for x
    x = 30,909,801,305.00/257,494.10
  6. Step 6: Final answer
    x = 120,040.81

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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.