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Finding the Fourth Proportional to 279,045.88, 418,559.42 and 121,274.34

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Solution

The fourth proportional to 279,045.88, 418,559.42 and 121,274.34 is: 181,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,045.88 : 418,559.42 = 121,274.34 : x
  2. Step 2: Convert to fraction form
    279,045.88/418,559.42 = 121,274.34/x
  3. Step 3: Cross multiply
    279,045.88x = 418,559.42 × 121,274.34
  4. Step 4: Simplify right side
    279,045.88x = 50,760,517,411.28
  5. Step 5: Solve for x
    x = 50,760,517,411.28/279,045.88
  6. Step 6: Final answer
    x = 181,907.42

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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.