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Finding the Fourth Proportional to 324,479.40, 486,719.10 and 137,466.60

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Solution

The fourth proportional to 324,479.40, 486,719.10 and 137,466.60 is: 206,199.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,479.40 : 486,719.10 = 137,466.60 : x
  2. Step 2: Convert to fraction form
    324,479.40/486,719.10 = 137,466.60/x
  3. Step 3: Cross multiply
    324,479.40x = 486,719.10 × 137,466.60
  4. Step 4: Simplify right side
    324,479.40x = 66,907,619,832.06
  5. Step 5: Solve for x
    x = 66,907,619,832.06/324,479.40
  6. Step 6: Final answer
    x = 206,199.90

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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.