Home / 388,128.35-582,217.23-121,899.37

Finding the Fourth Proportional to 388,128.35, 582,217.23 and 121,899.37

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Solution

The fourth proportional to 388,128.35, 582,217.23 and 121,899.37 is: 182,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,128.35 : 582,217.23 = 121,899.37 : x
  2. Step 2: Convert to fraction form
    388,128.35/582,217.23 = 121,899.37/x
  3. Step 3: Cross multiply
    388,128.35x = 582,217.23 × 121,899.37
  4. Step 4: Simplify right side
    388,128.35x = 70,971,913,540.15
  5. Step 5: Solve for x
    x = 70,971,913,540.15/388,128.35
  6. Step 6: Final answer
    x = 182,856.81

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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.