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Finding the Fourth Proportional to 493,879.32, 681,567.48 and 279,028.44

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Solution

The fourth proportional to 493,879.32, 681,567.48 and 279,028.44 is: 385,067.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,879.32 : 681,567.48 = 279,028.44 : x
  2. Step 2: Convert to fraction form
    493,879.32/681,567.48 = 279,028.44/x
  3. Step 3: Cross multiply
    493,879.32x = 681,567.48 × 279,028.44
  4. Step 4: Simplify right side
    493,879.32x = 190,176,710,699.13
  5. Step 5: Solve for x
    x = 190,176,710,699.13/493,879.32
  6. Step 6: Final answer
    x = 385,067.17

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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.