Home / 321,719.20-482,636.40-134,749.60

Finding the Fourth Proportional to 321,719.20, 482,636.40 and 134,749.60

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Solution

The fourth proportional to 321,719.20, 482,636.40 and 134,749.60 is: 202,148.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,719.20 : 482,636.40 = 134,749.60 : x
  2. Step 2: Convert to fraction form
    321,719.20/482,636.40 = 134,749.60/x
  3. Step 3: Cross multiply
    321,719.20x = 482,636.40 × 134,749.60
  4. Step 4: Simplify right side
    321,719.20x = 65,035,061,845.44
  5. Step 5: Solve for x
    x = 65,035,061,845.44/321,719.20
  6. Step 6: Final answer
    x = 202,148.53

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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.