Home / 217,686.15-300,469.50-131,645.25

Finding the Fourth Proportional to 217,686.15, 300,469.50 and 131,645.25

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Solution

The fourth proportional to 217,686.15, 300,469.50 and 131,645.25 is: 181,708.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,686.15 : 300,469.50 = 131,645.25 : x
  2. Step 2: Convert to fraction form
    217,686.15/300,469.50 = 131,645.25/x
  3. Step 3: Cross multiply
    217,686.15x = 300,469.50 × 131,645.25
  4. Step 4: Simplify right side
    217,686.15x = 39,555,382,444.88
  5. Step 5: Solve for x
    x = 39,555,382,444.88/217,686.15
  6. Step 6: Final answer
    x = 181,708.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.