Home / 309,170.09-426,653.77-171,357.80

Finding the Fourth Proportional to 309,170.09, 426,653.77 and 171,357.80

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Solution

The fourth proportional to 309,170.09, 426,653.77 and 171,357.80 is: 236,473.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,170.09 : 426,653.77 = 171,357.80 : x
  2. Step 2: Convert to fraction form
    309,170.09/426,653.77 = 171,357.80/x
  3. Step 3: Cross multiply
    309,170.09x = 426,653.77 × 171,357.80
  4. Step 4: Simplify right side
    309,170.09x = 73,110,450,105.90
  5. Step 5: Solve for x
    x = 73,110,450,105.90/309,170.09
  6. Step 6: Final answer
    x = 236,473.23

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1.5x scale

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.