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Finding the Fourth Proportional to 279,040.88, 418,561.34 and 82,048.88

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Solution

The fourth proportional to 279,040.88, 418,561.34 and 82,048.88 is: 123,073.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,040.88 : 418,561.34 = 82,048.88 : x
  2. Step 2: Convert to fraction form
    279,040.88/418,561.34 = 82,048.88/x
  3. Step 3: Cross multiply
    279,040.88x = 418,561.34 × 82,048.88
  4. Step 4: Simplify right side
    279,040.88x = 34,342,486,655.25
  5. Step 5: Solve for x
    x = 34,342,486,655.25/279,040.88
  6. Step 6: Final answer
    x = 123,073.32

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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.