Home / 307,990.45-425,035.38-170,178.25

Finding the Fourth Proportional to 307,990.45, 425,035.38 and 170,178.25

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Solution

The fourth proportional to 307,990.45, 425,035.38 and 170,178.25 is: 234,850.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,990.45 : 425,035.38 = 170,178.25 : x
  2. Step 2: Convert to fraction form
    307,990.45/425,035.38 = 170,178.25/x
  3. Step 3: Cross multiply
    307,990.45x = 425,035.38 × 170,178.25
  4. Step 4: Simplify right side
    307,990.45x = 72,331,777,156.49
  5. Step 5: Solve for x
    x = 72,331,777,156.49/307,990.45
  6. Step 6: Final answer
    x = 234,850.71

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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.