Home / 389,702-582,864.33-229,395.89

Finding the Fourth Proportional to 389,702, 582,864.33 and 229,395.89

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Solution

The fourth proportional to 389,702, 582,864.33 and 229,395.89 is: 343,099.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,702 : 582,864.33 = 229,395.89 : x
  2. Step 2: Convert to fraction form
    389,702/582,864.33 = 229,395.89/x
  3. Step 3: Cross multiply
    389,702x = 582,864.33 × 229,395.89
  4. Step 4: Simplify right side
    389,702x = 133,706,681,729.60
  5. Step 5: Solve for x
    x = 133,706,681,729.60/389,702
  6. Step 6: Final answer
    x = 343,099.81

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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.