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Finding the Fourth Proportional to 259,517.80, 389,276.70 and 93,322.60

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Solution

The fourth proportional to 259,517.80, 389,276.70 and 93,322.60 is: 139,983.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,517.80 : 389,276.70 = 93,322.60 : x
  2. Step 2: Convert to fraction form
    259,517.80/389,276.70 = 93,322.60/x
  3. Step 3: Cross multiply
    259,517.80x = 389,276.70 × 93,322.60
  4. Step 4: Simplify right side
    259,517.80x = 36,328,313,763.42
  5. Step 5: Solve for x
    x = 36,328,313,763.42/259,517.80
  6. Step 6: Final answer
    x = 139,983.90

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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.