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Finding the Fourth Proportional to 321,063.90, 443,366.01 and 240,351.30

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Solution

The fourth proportional to 321,063.90, 443,366.01 and 240,351.30 is: 331,907.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,063.90 : 443,366.01 = 240,351.30 : x
  2. Step 2: Convert to fraction form
    321,063.90/443,366.01 = 240,351.30/x
  3. Step 3: Cross multiply
    321,063.90x = 443,366.01 × 240,351.30
  4. Step 4: Simplify right side
    321,063.90x = 106,563,596,879.31
  5. Step 5: Solve for x
    x = 106,563,596,879.31/321,063.90
  6. Step 6: Final answer
    x = 331,907.75

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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.