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Finding the Fourth Proportional to 279,010.46, 418,452.64 and 79,326.48

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Solution

The fourth proportional to 279,010.46, 418,452.64 and 79,326.48 is: 118,971.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,010.46 : 418,452.64 = 79,326.48 : x
  2. Step 2: Convert to fraction form
    279,010.46/418,452.64 = 79,326.48/x
  3. Step 3: Cross multiply
    279,010.46x = 418,452.64 × 79,326.48
  4. Step 4: Simplify right side
    279,010.46x = 33,194,374,977.91
  5. Step 5: Solve for x
    x = 33,194,374,977.91/279,010.46
  6. Step 6: Final answer
    x = 118,971.79

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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.