Home / 258,835.01-388,054.87-81,239.27

Finding the Fourth Proportional to 258,835.01, 388,054.87 and 81,239.27

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Solution

The fourth proportional to 258,835.01, 388,054.87 and 81,239.27 is: 121,796.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,835.01 : 388,054.87 = 81,239.27 : x
  2. Step 2: Convert to fraction form
    258,835.01/388,054.87 = 81,239.27/x
  3. Step 3: Cross multiply
    258,835.01x = 388,054.87 × 81,239.27
  4. Step 4: Simplify right side
    258,835.01x = 31,525,292,215.37
  5. Step 5: Solve for x
    x = 31,525,292,215.37/258,835.01
  6. Step 6: Final answer
    x = 121,796.87

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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.