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Finding the Fourth Proportional to 260,044.80, 389,629.80 and 222,428.40

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Solution

The fourth proportional to 260,044.80, 389,629.80 and 222,428.40 is: 333,268.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,044.80 : 389,629.80 = 222,428.40 : x
  2. Step 2: Convert to fraction form
    260,044.80/389,629.80 = 222,428.40/x
  3. Step 3: Cross multiply
    260,044.80x = 389,629.80 × 222,428.40
  4. Step 4: Simplify right side
    260,044.80x = 86,664,733,006.32
  5. Step 5: Solve for x
    x = 86,664,733,006.32/260,044.80
  6. Step 6: Final answer
    x = 333,268.47

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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.