Home / 388,524.48-582,890.43-139,231.68

Finding the Fourth Proportional to 388,524.48, 582,890.43 and 139,231.68

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Solution

The fourth proportional to 388,524.48, 582,890.43 and 139,231.68 is: 208,884.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,524.48 : 582,890.43 = 139,231.68 : x
  2. Step 2: Convert to fraction form
    388,524.48/582,890.43 = 139,231.68/x
  3. Step 3: Cross multiply
    388,524.48x = 582,890.43 × 139,231.68
  4. Step 4: Simplify right side
    388,524.48x = 81,156,813,824.82
  5. Step 5: Solve for x
    x = 81,156,813,824.82/388,524.48
  6. Step 6: Final answer
    x = 208,884.69

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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.