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Finding the Fourth Proportional to 499,361.35, 689,121.78 and 269,918.17

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Solution

The fourth proportional to 499,361.35, 689,121.78 and 269,918.17 is: 372,488.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,361.35 : 689,121.78 = 269,918.17 : x
  2. Step 2: Convert to fraction form
    499,361.35/689,121.78 = 269,918.17/x
  3. Step 3: Cross multiply
    499,361.35x = 689,121.78 × 269,918.17
  4. Step 4: Simplify right side
    499,361.35x = 186,006,489,764.74
  5. Step 5: Solve for x
    x = 186,006,489,764.74/499,361.35
  6. Step 6: Final answer
    x = 372,488.76

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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.