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Finding the Fourth Proportional to 279,042.37, 418,554.17 and 121,270.84

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Solution

The fourth proportional to 279,042.37, 418,554.17 and 121,270.84 is: 181,902.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,042.37 : 418,554.17 = 121,270.84 : x
  2. Step 2: Convert to fraction form
    279,042.37/418,554.17 = 121,270.84/x
  3. Step 3: Cross multiply
    279,042.37x = 418,554.17 × 121,270.84
  4. Step 4: Simplify right side
    279,042.37x = 50,758,415,781.40
  5. Step 5: Solve for x
    x = 50,758,415,781.40/279,042.37
  6. Step 6: Final answer
    x = 181,902.18

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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.