Home / 320,178.88-480,516.24-120,680.76

Finding the Fourth Proportional to 320,178.88, 480,516.24 and 120,680.76

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Solution

The fourth proportional to 320,178.88, 480,516.24 and 120,680.76 is: 181,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,178.88 : 480,516.24 = 120,680.76 : x
  2. Step 2: Convert to fraction form
    320,178.88/480,516.24 = 120,680.76/x
  3. Step 3: Cross multiply
    320,178.88x = 480,516.24 × 120,680.76
  4. Step 4: Simplify right side
    320,178.88x = 57,989,065,035.54
  5. Step 5: Solve for x
    x = 57,989,065,035.54/320,178.88
  6. Step 6: Final answer
    x = 181,114.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.