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Finding the Fourth Proportional to 259,896.80, 389,384.40 and 161,285.60

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Solution

The fourth proportional to 259,896.80, 389,384.40 and 161,285.60 is: 241,642.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,896.80 : 389,384.40 = 161,285.60 : x
  2. Step 2: Convert to fraction form
    259,896.80/389,384.40 = 161,285.60/x
  3. Step 3: Cross multiply
    259,896.80x = 389,384.40 × 161,285.60
  4. Step 4: Simplify right side
    259,896.80x = 62,802,096,584.64
  5. Step 5: Solve for x
    x = 62,802,096,584.64/259,896.80
  6. Step 6: Final answer
    x = 241,642.44

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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.