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Finding the Fourth Proportional to 271,969.70, 407,954.55 and 209,761.70

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Solution

The fourth proportional to 271,969.70, 407,954.55 and 209,761.70 is: 314,642.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,969.70 : 407,954.55 = 209,761.70 : x
  2. Step 2: Convert to fraction form
    271,969.70/407,954.55 = 209,761.70/x
  3. Step 3: Cross multiply
    271,969.70x = 407,954.55 × 209,761.70
  4. Step 4: Simplify right side
    271,969.70x = 85,573,239,930.74
  5. Step 5: Solve for x
    x = 85,573,239,930.74/271,969.70
  6. Step 6: Final answer
    x = 314,642.55

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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.