Home / 271,921.86-407,890.83-129,782.11

Finding the Fourth Proportional to 271,921.86, 407,890.83 and 129,782.11

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Solution

The fourth proportional to 271,921.86, 407,890.83 and 129,782.11 is: 194,677.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,921.86 : 407,890.83 = 129,782.11 : x
  2. Step 2: Convert to fraction form
    271,921.86/407,890.83 = 129,782.11/x
  3. Step 3: Cross multiply
    271,921.86x = 407,890.83 × 129,782.11
  4. Step 4: Simplify right side
    271,921.86x = 52,936,932,567.05
  5. Step 5: Solve for x
    x = 52,936,932,567.05/271,921.86
  6. Step 6: Final answer
    x = 194,677.00

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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.