Home / 321,936.81-482,914.35-85,279.53

Finding the Fourth Proportional to 321,936.81, 482,914.35 and 85,279.53

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Solution

The fourth proportional to 321,936.81, 482,914.35 and 85,279.53 is: 127,921.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,936.81 : 482,914.35 = 85,279.53 : x
  2. Step 2: Convert to fraction form
    321,936.81/482,914.35 = 85,279.53/x
  3. Step 3: Cross multiply
    321,936.81x = 482,914.35 × 85,279.53
  4. Step 4: Simplify right side
    321,936.81x = 41,182,708,798.26
  5. Step 5: Solve for x
    x = 41,182,708,798.26/321,936.81
  6. Step 6: Final answer
    x = 127,921.71

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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.