Home / 274,711.31-412,207.49-130,779.78

Finding the Fourth Proportional to 274,711.31, 412,207.49 and 130,779.78

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Solution

The fourth proportional to 274,711.31, 412,207.49 and 130,779.78 is: 196,236.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,711.31 : 412,207.49 = 130,779.78 : x
  2. Step 2: Convert to fraction form
    274,711.31/412,207.49 = 130,779.78/x
  3. Step 3: Cross multiply
    274,711.31x = 412,207.49 × 130,779.78
  4. Step 4: Simplify right side
    274,711.31x = 53,908,404,856.55
  5. Step 5: Solve for x
    x = 53,908,404,856.55/274,711.31
  6. Step 6: Final answer
    x = 196,236.57

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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.