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Finding the Fourth Proportional to 260,605.62, 390,991.50 and 116,489.22

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Solution

The fourth proportional to 260,605.62, 390,991.50 and 116,489.22 is: 174,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,605.62 : 390,991.50 = 116,489.22 : x
  2. Step 2: Convert to fraction form
    260,605.62/390,991.50 = 116,489.22/x
  3. Step 3: Cross multiply
    260,605.62x = 390,991.50 × 116,489.22
  4. Step 4: Simplify right side
    260,605.62x = 45,546,294,861.63
  5. Step 5: Solve for x
    x = 45,546,294,861.63/260,605.62
  6. Step 6: Final answer
    x = 174,770.96

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