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Finding the Fourth Proportional to 279,057, 418,585.52 and 82,065

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Solution

The fourth proportional to 279,057, 418,585.52 and 82,065 is: 123,097.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,057 : 418,585.52 = 82,065 : x
  2. Step 2: Convert to fraction form
    279,057/418,585.52 = 82,065/x
  3. Step 3: Cross multiply
    279,057x = 418,585.52 × 82,065
  4. Step 4: Simplify right side
    279,057x = 34,351,220,903.96
  5. Step 5: Solve for x
    x = 34,351,220,903.96/279,057
  6. Step 6: Final answer
    x = 123,097.51

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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.