Home / 274,712.31-412,208.99-130,780.78

Finding the Fourth Proportional to 274,712.31, 412,208.99 and 130,780.78

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Solution

The fourth proportional to 274,712.31, 412,208.99 and 130,780.78 is: 196,238.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,712.31 : 412,208.99 = 130,780.78 : x
  2. Step 2: Convert to fraction form
    274,712.31/412,208.99 = 130,780.78/x
  3. Step 3: Cross multiply
    274,712.31x = 412,208.99 × 130,780.78
  4. Step 4: Simplify right side
    274,712.31x = 53,909,013,235.21
  5. Step 5: Solve for x
    x = 53,909,013,235.21/274,712.31
  6. Step 6: Final answer
    x = 196,238.07

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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.