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Finding the Fourth Proportional to 279,458.33, 419,252.56 and 79,781.45

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Solution

The fourth proportional to 279,458.33, 419,252.56 and 79,781.45 is: 119,690.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,458.33 : 419,252.56 = 79,781.45 : x
  2. Step 2: Convert to fraction form
    279,458.33/419,252.56 = 79,781.45/x
  3. Step 3: Cross multiply
    279,458.33x = 419,252.56 × 79,781.45
  4. Step 4: Simplify right side
    279,458.33x = 33,448,574,857.30
  5. Step 5: Solve for x
    x = 33,448,574,857.30/279,458.33
  6. Step 6: Final answer
    x = 119,690.74

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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.