Home / 320,418.33-480,654.83-83,760.63

Finding the Fourth Proportional to 320,418.33, 480,654.83 and 83,760.63

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Solution

The fourth proportional to 320,418.33, 480,654.83 and 83,760.63 is: 125,648.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,418.33 : 480,654.83 = 83,760.63 : x
  2. Step 2: Convert to fraction form
    320,418.33/480,654.83 = 83,760.63/x
  3. Step 3: Cross multiply
    320,418.33x = 480,654.83 × 83,760.63
  4. Step 4: Simplify right side
    320,418.33x = 40,259,948,551.27
  5. Step 5: Solve for x
    x = 40,259,948,551.27/320,418.33
  6. Step 6: Final answer
    x = 125,648.08

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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.