Home / 320,995.28-481,481.40-121,307.60

Finding the Fourth Proportional to 320,995.28, 481,481.40 and 121,307.60

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Solution

The fourth proportional to 320,995.28, 481,481.40 and 121,307.60 is: 181,957.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,995.28 : 481,481.40 = 121,307.60 : x
  2. Step 2: Convert to fraction form
    320,995.28/481,481.40 = 121,307.60/x
  3. Step 3: Cross multiply
    320,995.28x = 481,481.40 × 121,307.60
  4. Step 4: Simplify right side
    320,995.28x = 58,407,353,078.64
  5. Step 5: Solve for x
    x = 58,407,353,078.64/320,995.28
  6. Step 6: Final answer
    x = 181,957.05

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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.