Home / 320,179.03-480,516.40-120,680.89

Finding the Fourth Proportional to 320,179.03, 480,516.40 and 120,680.89

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Solution

The fourth proportional to 320,179.03, 480,516.40 and 120,680.89 is: 181,114.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,179.03 : 480,516.40 = 120,680.89 : x
  2. Step 2: Convert to fraction form
    320,179.03/480,516.40 = 120,680.89/x
  3. Step 3: Cross multiply
    320,179.03x = 480,516.40 × 120,680.89
  4. Step 4: Simplify right side
    320,179.03x = 57,989,145,761.16
  5. Step 5: Solve for x
    x = 57,989,145,761.16/320,179.03
  6. Step 6: Final answer
    x = 181,114.75

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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.