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Finding the Fourth Proportional to 321,717.20, 482,633.40 and 134,747.60

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Solution

The fourth proportional to 321,717.20, 482,633.40 and 134,747.60 is: 202,145.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,717.20 : 482,633.40 = 134,747.60 : x
  2. Step 2: Convert to fraction form
    321,717.20/482,633.40 = 134,747.60/x
  3. Step 3: Cross multiply
    321,717.20x = 482,633.40 × 134,747.60
  4. Step 4: Simplify right side
    321,717.20x = 65,033,692,329.84
  5. Step 5: Solve for x
    x = 65,033,692,329.84/321,717.20
  6. Step 6: Final answer
    x = 202,145.53

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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.