Home / 258,887.12-388,333.24-71,899.60

Finding the Fourth Proportional to 258,887.12, 388,333.24 and 71,899.60

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Solution

The fourth proportional to 258,887.12, 388,333.24 and 71,899.60 is: 107,850.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,887.12 : 388,333.24 = 71,899.60 : x
  2. Step 2: Convert to fraction form
    258,887.12/388,333.24 = 71,899.60/x
  3. Step 3: Cross multiply
    258,887.12x = 388,333.24 × 71,899.60
  4. Step 4: Simplify right side
    258,887.12x = 27,921,004,622.70
  5. Step 5: Solve for x
    x = 27,921,004,622.70/258,887.12
  6. Step 6: Final answer
    x = 107,850.11

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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.