Home / 271,919.31-407,887-129,779.54

Finding the Fourth Proportional to 271,919.31, 407,887 and 129,779.54

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Solution

The fourth proportional to 271,919.31, 407,887 and 129,779.54 is: 194,673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,919.31 : 407,887 = 129,779.54 : x
  2. Step 2: Convert to fraction form
    271,919.31/407,887 = 129,779.54/x
  3. Step 3: Cross multiply
    271,919.31x = 407,887 × 129,779.54
  4. Step 4: Simplify right side
    271,919.31x = 52,935,387,231.98
  5. Step 5: Solve for x
    x = 52,935,387,231.98/271,919.31
  6. Step 6: Final answer
    x = 194,673.14

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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.