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Finding the Fourth Proportional to 493,902.15, 681,583.50 and 279,042.14

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Solution

The fourth proportional to 493,902.15, 681,583.50 and 279,042.14 is: 385,077.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,902.15 : 681,583.50 = 279,042.14 : x
  2. Step 2: Convert to fraction form
    493,902.15/681,583.50 = 279,042.14/x
  3. Step 3: Cross multiply
    493,902.15x = 681,583.50 × 279,042.14
  4. Step 4: Simplify right side
    493,902.15x = 190,190,515,020.77
  5. Step 5: Solve for x
    x = 190,190,515,020.77/493,902.15
  6. Step 6: Final answer
    x = 385,077.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.