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Finding the Fourth Proportional to 260,051.80, 389,640.30 and 222,435.40

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Solution

The fourth proportional to 260,051.80, 389,640.30 and 222,435.40 is: 333,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,051.80 : 389,640.30 = 222,435.40 : x
  2. Step 2: Convert to fraction form
    260,051.80/389,640.30 = 222,435.40/x
  3. Step 3: Cross multiply
    260,051.80x = 389,640.30 × 222,435.40
  4. Step 4: Simplify right side
    260,051.80x = 86,669,795,986.62
  5. Step 5: Solve for x
    x = 86,669,795,986.62/260,051.80
  6. Step 6: Final answer
    x = 333,278.97

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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.