Home / 280,779.20-421,190.88-93,791.36

Finding the Fourth Proportional to 280,779.20, 421,190.88 and 93,791.36

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Solution

The fourth proportional to 280,779.20, 421,190.88 and 93,791.36 is: 140,694.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,779.20 : 421,190.88 = 93,791.36 : x
  2. Step 2: Convert to fraction form
    280,779.20/421,190.88 = 93,791.36/x
  3. Step 3: Cross multiply
    280,779.20x = 421,190.88 × 93,791.36
  4. Step 4: Simplify right side
    280,779.20x = 39,504,065,454.80
  5. Step 5: Solve for x
    x = 39,504,065,454.80/280,779.20
  6. Step 6: Final answer
    x = 140,694.42

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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.