Home / 309,961.92-427,761.66-172,141.48

Finding the Fourth Proportional to 309,961.92, 427,761.66 and 172,141.48

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Solution

The fourth proportional to 309,961.92, 427,761.66 and 172,141.48 is: 237,563.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,961.92 : 427,761.66 = 172,141.48 : x
  2. Step 2: Convert to fraction form
    309,961.92/427,761.66 = 172,141.48/x
  3. Step 3: Cross multiply
    309,961.92x = 427,761.66 × 172,141.48
  4. Step 4: Simplify right side
    309,961.92x = 73,635,526,419.89
  5. Step 5: Solve for x
    x = 73,635,526,419.89/309,961.92
  6. Step 6: Final answer
    x = 237,563.14

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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.