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Finding the Fourth Proportional to 321,322.76, 443,425.40 and 178,104.32

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Solution

The fourth proportional to 321,322.76, 443,425.40 and 178,104.32 is: 245,783.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,322.76 : 443,425.40 = 178,104.32 : x
  2. Step 2: Convert to fraction form
    321,322.76/443,425.40 = 178,104.32/x
  3. Step 3: Cross multiply
    321,322.76x = 443,425.40 × 178,104.32
  4. Step 4: Simplify right side
    321,322.76x = 78,975,979,337.73
  5. Step 5: Solve for x
    x = 78,975,979,337.73/321,322.76
  6. Step 6: Final answer
    x = 245,783.96

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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.