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Finding the Fourth Proportional to 279,135.63, 418,544.89 and 190,496.52

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Solution

The fourth proportional to 279,135.63, 418,544.89 and 190,496.52 is: 285,636.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,135.63 : 418,544.89 = 190,496.52 : x
  2. Step 2: Convert to fraction form
    279,135.63/418,544.89 = 190,496.52/x
  3. Step 3: Cross multiply
    279,135.63x = 418,544.89 × 190,496.52
  4. Step 4: Simplify right side
    279,135.63x = 79,731,344,532.54
  5. Step 5: Solve for x
    x = 79,731,344,532.54/279,135.63
  6. Step 6: Final answer
    x = 285,636.57

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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.