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Finding the Fourth Proportional to 305,952.24, 422,208.60 and 169,986.80

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Solution

The fourth proportional to 305,952.24, 422,208.60 and 169,986.80 is: 234,578.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,952.24 : 422,208.60 = 169,986.80 : x
  2. Step 2: Convert to fraction form
    305,952.24/422,208.60 = 169,986.80/x
  3. Step 3: Cross multiply
    305,952.24x = 422,208.60 × 169,986.80
  4. Step 4: Simplify right side
    305,952.24x = 71,769,888,846.48
  5. Step 5: Solve for x
    x = 71,769,888,846.48/305,952.24
  6. Step 6: Final answer
    x = 234,578.73

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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.