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Finding the Fourth Proportional to 279,325.01, 418,991.42 and 79,645.48

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Solution

The fourth proportional to 279,325.01, 418,991.42 and 79,645.48 is: 119,469.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,325.01 : 418,991.42 = 79,645.48 : x
  2. Step 2: Convert to fraction form
    279,325.01/418,991.42 = 79,645.48/x
  3. Step 3: Cross multiply
    279,325.01x = 418,991.42 × 79,645.48
  4. Step 4: Simplify right side
    279,325.01x = 33,370,771,913.42
  5. Step 5: Solve for x
    x = 33,370,771,913.42/279,325.01
  6. Step 6: Final answer
    x = 119,469.33

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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.