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Finding the Fourth Proportional to 321,003.92, 481,406.04 and 107,730.32

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Solution

The fourth proportional to 321,003.92, 481,406.04 and 107,730.32 is: 161,561.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,003.92 : 481,406.04 = 107,730.32 : x
  2. Step 2: Convert to fraction form
    321,003.92/481,406.04 = 107,730.32/x
  3. Step 3: Cross multiply
    321,003.92x = 481,406.04 × 107,730.32
  4. Step 4: Simplify right side
    321,003.92x = 51,862,026,739.13
  5. Step 5: Solve for x
    x = 51,862,026,739.13/321,003.92
  6. Step 6: Final answer
    x = 161,561.97

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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.