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Finding the Fourth Proportional to 320,670.73, 481,021.61 and 84,013.64

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Solution

The fourth proportional to 320,670.73, 481,021.61 and 84,013.64 is: 126,024.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,670.73 : 481,021.61 = 84,013.64 : x
  2. Step 2: Convert to fraction form
    320,670.73/481,021.61 = 84,013.64/x
  3. Step 3: Cross multiply
    320,670.73x = 481,021.61 × 84,013.64
  4. Step 4: Simplify right side
    320,670.73x = 40,412,375,353.42
  5. Step 5: Solve for x
    x = 40,412,375,353.42/320,670.73
  6. Step 6: Final answer
    x = 126,024.52

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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.