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Finding the Fourth Proportional to 259,964.80, 389,644.80 and 119,737.60

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Solution

The fourth proportional to 259,964.80, 389,644.80 and 119,737.60 is: 179,467.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,964.80 : 389,644.80 = 119,737.60 : x
  2. Step 2: Convert to fraction form
    259,964.80/389,644.80 = 119,737.60/x
  3. Step 3: Cross multiply
    259,964.80x = 389,644.80 × 119,737.60
  4. Step 4: Simplify right side
    259,964.80x = 46,655,133,204.48
  5. Step 5: Solve for x
    x = 46,655,133,204.48/259,964.80
  6. Step 6: Final answer
    x = 179,467.12

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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.