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Finding the Fourth Proportional to 321,253.20, 443,333.16 and 178,014.96

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Solution

The fourth proportional to 321,253.20, 443,333.16 and 178,014.96 is: 245,662.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,253.20 : 443,333.16 = 178,014.96 : x
  2. Step 2: Convert to fraction form
    321,253.20/443,333.16 = 178,014.96/x
  3. Step 3: Cross multiply
    321,253.20x = 443,333.16 × 178,014.96
  4. Step 4: Simplify right side
    321,253.20x = 78,919,934,744.07
  5. Step 5: Solve for x
    x = 78,919,934,744.07/321,253.20
  6. Step 6: Final answer
    x = 245,662.72

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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.