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Finding the Fourth Proportional to 279,093.42, 418,609 and 76,705.04

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Solution

The fourth proportional to 279,093.42, 418,609 and 76,705.04 is: 115,049.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,093.42 : 418,609 = 76,705.04 : x
  2. Step 2: Convert to fraction form
    279,093.42/418,609 = 76,705.04/x
  3. Step 3: Cross multiply
    279,093.42x = 418,609 × 76,705.04
  4. Step 4: Simplify right side
    279,093.42x = 32,109,420,089.36
  5. Step 5: Solve for x
    x = 32,109,420,089.36/279,093.42
  6. Step 6: Final answer
    x = 115,049.00

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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.