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Finding the Fourth Proportional to 258,999.37, 388,554.64 and 146,733.37

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Solution

The fourth proportional to 258,999.37, 388,554.64 and 146,733.37 is: 220,131.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,999.37 : 388,554.64 = 146,733.37 : x
  2. Step 2: Convert to fraction form
    258,999.37/388,554.64 = 146,733.37/x
  3. Step 3: Cross multiply
    258,999.37x = 388,554.64 × 146,733.37
  4. Step 4: Simplify right side
    258,999.37x = 57,013,930,418.12
  5. Step 5: Solve for x
    x = 57,013,930,418.12/258,999.37
  6. Step 6: Final answer
    x = 220,131.54

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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.