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Finding the Fourth Proportional to 258,896.60, 388,357.70 and 134,480.60

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Solution

The fourth proportional to 258,896.60, 388,357.70 and 134,480.60 is: 201,727.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,896.60 : 388,357.70 = 134,480.60 : x
  2. Step 2: Convert to fraction form
    258,896.60/388,357.70 = 134,480.60/x
  3. Step 3: Cross multiply
    258,896.60x = 388,357.70 × 134,480.60
  4. Step 4: Simplify right side
    258,896.60x = 52,226,576,510.62
  5. Step 5: Solve for x
    x = 52,226,576,510.62/258,896.60
  6. Step 6: Final answer
    x = 201,727.55

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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.