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Finding the Fourth Proportional to 266,539.59, 399,750.42 and 76,958.81

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Solution

The fourth proportional to 266,539.59, 399,750.42 and 76,958.81 is: 115,421.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,539.59 : 399,750.42 = 76,958.81 : x
  2. Step 2: Convert to fraction form
    266,539.59/399,750.42 = 76,958.81/x
  3. Step 3: Cross multiply
    266,539.59x = 399,750.42 × 76,958.81
  4. Step 4: Simplify right side
    266,539.59x = 30,764,315,620.82
  5. Step 5: Solve for x
    x = 30,764,315,620.82/266,539.59
  6. Step 6: Final answer
    x = 115,421.19

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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.