Home / 321,479.45-482,239.23-84,822.36

Finding the Fourth Proportional to 321,479.45, 482,239.23 and 84,822.36

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Solution

The fourth proportional to 321,479.45, 482,239.23 and 84,822.36 is: 127,238.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,479.45 : 482,239.23 = 84,822.36 : x
  2. Step 2: Convert to fraction form
    321,479.45/482,239.23 = 84,822.36/x
  3. Step 3: Cross multiply
    321,479.45x = 482,239.23 × 84,822.36
  4. Step 4: Simplify right side
    321,479.45x = 40,904,669,149.07
  5. Step 5: Solve for x
    x = 40,904,669,149.07/321,479.45
  6. Step 6: Final answer
    x = 127,238.83

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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.