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Finding the Fourth Proportional to 321,510.20, 482,166.80 and 222,307.88

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Solution

The fourth proportional to 321,510.20, 482,166.80 and 222,307.88 is: 333,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,510.20 : 482,166.80 = 222,307.88 : x
  2. Step 2: Convert to fraction form
    321,510.20/482,166.80 = 222,307.88/x
  3. Step 3: Cross multiply
    321,510.20x = 482,166.80 × 222,307.88
  4. Step 4: Simplify right side
    321,510.20x = 107,189,479,114.38
  5. Step 5: Solve for x
    x = 107,189,479,114.38/321,510.20
  6. Step 6: Final answer
    x = 333,393.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.