Home / 306,165.15-422,542.89-170,212.59

Finding the Fourth Proportional to 306,165.15, 422,542.89 and 170,212.59

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Solution

The fourth proportional to 306,165.15, 422,542.89 and 170,212.59 is: 234,912.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,165.15 : 422,542.89 = 170,212.59 : x
  2. Step 2: Convert to fraction form
    306,165.15/422,542.89 = 170,212.59/x
  3. Step 3: Cross multiply
    306,165.15x = 422,542.89 × 170,212.59
  4. Step 4: Simplify right side
    306,165.15x = 71,922,119,692.99
  5. Step 5: Solve for x
    x = 71,922,119,692.99/306,165.15
  6. Step 6: Final answer
    x = 234,912.82

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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.