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Finding the Fourth Proportional to 388,348.68, 582,611.27 and 118,500.96

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Solution

The fourth proportional to 388,348.68, 582,611.27 and 118,500.96 is: 177,778.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,348.68 : 582,611.27 = 118,500.96 : x
  2. Step 2: Convert to fraction form
    388,348.68/582,611.27 = 118,500.96/x
  3. Step 3: Cross multiply
    388,348.68x = 582,611.27 × 118,500.96
  4. Step 4: Simplify right side
    388,348.68x = 69,039,991,887.97
  5. Step 5: Solve for x
    x = 69,039,991,887.97/388,348.68
  6. Step 6: Final answer
    x = 177,778.36

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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.