Home / 258,519.40-387,776.46-100,858.60

Finding the Fourth Proportional to 258,519.40, 387,776.46 and 100,858.60

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Solution

The fourth proportional to 258,519.40, 387,776.46 and 100,858.60 is: 151,286.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,519.40 : 387,776.46 = 100,858.60 : x
  2. Step 2: Convert to fraction form
    258,519.40/387,776.46 = 100,858.60/x
  3. Step 3: Cross multiply
    258,519.40x = 387,776.46 × 100,858.60
  4. Step 4: Simplify right side
    258,519.40x = 39,110,590,868.56
  5. Step 5: Solve for x
    x = 39,110,590,868.56/258,519.40
  6. Step 6: Final answer
    x = 151,286.87

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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.