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Finding the Fourth Proportional to 260,169.46, 389,974.22 and 170,178.28

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Solution

The fourth proportional to 260,169.46, 389,974.22 and 170,178.28 is: 255,084.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,169.46 : 389,974.22 = 170,178.28 : x
  2. Step 2: Convert to fraction form
    260,169.46/389,974.22 = 170,178.28/x
  3. Step 3: Cross multiply
    260,169.46x = 389,974.22 × 170,178.28
  4. Step 4: Simplify right side
    260,169.46x = 66,365,142,003.94
  5. Step 5: Solve for x
    x = 66,365,142,003.94/260,169.46
  6. Step 6: Final answer
    x = 255,084.29

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1.5x scale

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.