Home / 279,569.91-419,367.83-79,918.68

Finding the Fourth Proportional to 279,569.91, 419,367.83 and 79,918.68

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Solution

The fourth proportional to 279,569.91, 419,367.83 and 79,918.68 is: 119,881.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,569.91 : 419,367.83 = 79,918.68 : x
  2. Step 2: Convert to fraction form
    279,569.91/419,367.83 = 79,918.68/x
  3. Step 3: Cross multiply
    279,569.91x = 419,367.83 × 79,918.68
  4. Step 4: Simplify right side
    279,569.91x = 33,515,323,008.47
  5. Step 5: Solve for x
    x = 33,515,323,008.47/279,569.91
  6. Step 6: Final answer
    x = 119,881.72

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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.