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Finding the Fourth Proportional to 321,235.70, 443,308.29 and 177,997.46

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Solution

The fourth proportional to 321,235.70, 443,308.29 and 177,997.46 is: 245,638.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,235.70 : 443,308.29 = 177,997.46 : x
  2. Step 2: Convert to fraction form
    321,235.70/443,308.29 = 177,997.46/x
  3. Step 3: Cross multiply
    321,235.70x = 443,308.29 × 177,997.46
  4. Step 4: Simplify right side
    321,235.70x = 78,907,749,616.94
  5. Step 5: Solve for x
    x = 78,907,749,616.94/321,235.70
  6. Step 6: Final answer
    x = 245,638.17

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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.