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Finding the Fourth Proportional to 321,246, 443,329.20 and 177,992.64

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Solution

The fourth proportional to 321,246, 443,329.20 and 177,992.64 is: 245,635.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,246 : 443,329.20 = 177,992.64 : x
  2. Step 2: Convert to fraction form
    321,246/443,329.20 = 177,992.64/x
  3. Step 3: Cross multiply
    321,246x = 443,329.20 × 177,992.64
  4. Step 4: Simplify right side
    321,246x = 78,909,334,697.09
  5. Step 5: Solve for x
    x = 78,909,334,697.09/321,246
  6. Step 6: Final answer
    x = 245,635.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.