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Finding the Fourth Proportional to 501,361.35, 691,876.66 and 271,917.71

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Solution

The fourth proportional to 501,361.35, 691,876.66 and 271,917.71 is: 375,245.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,361.35 : 691,876.66 = 271,917.71 : x
  2. Step 2: Convert to fraction form
    501,361.35/691,876.66 = 271,917.71/x
  3. Step 3: Cross multiply
    501,361.35x = 691,876.66 × 271,917.71
  4. Step 4: Simplify right side
    501,361.35x = 188,133,516,719.63
  5. Step 5: Solve for x
    x = 188,133,516,719.63/501,361.35
  6. Step 6: Final answer
    x = 375,245.36

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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.