Home / 320,087.22-480,131.20-83,429.70

Finding the Fourth Proportional to 320,087.22, 480,131.20 and 83,429.70

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Solution

The fourth proportional to 320,087.22, 480,131.20 and 83,429.70 is: 125,144.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,087.22 : 480,131.20 = 83,429.70 : x
  2. Step 2: Convert to fraction form
    320,087.22/480,131.20 = 83,429.70/x
  3. Step 3: Cross multiply
    320,087.22x = 480,131.20 × 83,429.70
  4. Step 4: Simplify right side
    320,087.22x = 40,057,201,976.64
  5. Step 5: Solve for x
    x = 40,057,201,976.64/320,087.22
  6. Step 6: Final answer
    x = 125,144.65

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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.