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Finding the Fourth Proportional to 279,287.06, 418,996.19 and 79,610.31

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Solution

The fourth proportional to 279,287.06, 418,996.19 and 79,610.31 is: 119,434.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,287.06 : 418,996.19 = 79,610.31 : x
  2. Step 2: Convert to fraction form
    279,287.06/418,996.19 = 79,610.31/x
  3. Step 3: Cross multiply
    279,287.06x = 418,996.19 × 79,610.31
  4. Step 4: Simplify right side
    279,287.06x = 33,356,416,773.74
  5. Step 5: Solve for x
    x = 33,356,416,773.74/279,287.06
  6. Step 6: Final answer
    x = 119,434.17

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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.