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Finding the Fourth Proportional to 321,070.90, 443,375.67 and 240,358.30

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Solution

The fourth proportional to 321,070.90, 443,375.67 and 240,358.30 is: 331,917.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,070.90 : 443,375.67 = 240,358.30 : x
  2. Step 2: Convert to fraction form
    321,070.90/443,375.67 = 240,358.30/x
  3. Step 3: Cross multiply
    321,070.90x = 443,375.67 × 240,358.30
  4. Step 4: Simplify right side
    321,070.90x = 106,569,022,302.56
  5. Step 5: Solve for x
    x = 106,569,022,302.56/321,070.90
  6. Step 6: Final answer
    x = 331,917.41

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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.