Home / 258,717-388,077.27-98,749.80

Finding the Fourth Proportional to 258,717, 388,077.27 and 98,749.80

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Solution

The fourth proportional to 258,717, 388,077.27 and 98,749.80 is: 148,125.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,717 : 388,077.27 = 98,749.80 : x
  2. Step 2: Convert to fraction form
    258,717/388,077.27 = 98,749.80/x
  3. Step 3: Cross multiply
    258,717x = 388,077.27 × 98,749.80
  4. Step 4: Simplify right side
    258,717x = 38,322,552,797.05
  5. Step 5: Solve for x
    x = 38,322,552,797.05/258,717
  6. Step 6: Final answer
    x = 148,125.38

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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.