Home / 306,340.11-422,761.01-170,383.88

Finding the Fourth Proportional to 306,340.11, 422,761.01 and 170,383.88

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Solution

The fourth proportional to 306,340.11, 422,761.01 and 170,383.88 is: 235,136.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,340.11 : 422,761.01 = 170,383.88 : x
  2. Step 2: Convert to fraction form
    306,340.11/422,761.01 = 170,383.88/x
  3. Step 3: Cross multiply
    306,340.11x = 422,761.01 × 170,383.88
  4. Step 4: Simplify right side
    306,340.11x = 72,031,661,401.50
  5. Step 5: Solve for x
    x = 72,031,661,401.50/306,340.11
  6. Step 6: Final answer
    x = 235,136.24

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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.