Home / 321,036.20-481,554.30-84,402.80

Finding the Fourth Proportional to 321,036.20, 481,554.30 and 84,402.80

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Solution

The fourth proportional to 321,036.20, 481,554.30 and 84,402.80 is: 126,604.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,036.20 : 481,554.30 = 84,402.80 : x
  2. Step 2: Convert to fraction form
    321,036.20/481,554.30 = 84,402.80/x
  3. Step 3: Cross multiply
    321,036.20x = 481,554.30 × 84,402.80
  4. Step 4: Simplify right side
    321,036.20x = 40,644,531,272.04
  5. Step 5: Solve for x
    x = 40,644,531,272.04/321,036.20
  6. Step 6: Final answer
    x = 126,604.20

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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.