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Finding the Fourth Proportional to 320,412.82, 480,336.39 and 120,873.34

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Solution

The fourth proportional to 320,412.82, 480,336.39 and 120,873.34 is: 181,203.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,412.82 : 480,336.39 = 120,873.34 : x
  2. Step 2: Convert to fraction form
    320,412.82/480,336.39 = 120,873.34/x
  3. Step 3: Cross multiply
    320,412.82x = 480,336.39 × 120,873.34
  4. Step 4: Simplify right side
    320,412.82x = 58,059,862,692.36
  5. Step 5: Solve for x
    x = 58,059,862,692.36/320,412.82
  6. Step 6: Final answer
    x = 181,203.31

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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.