Home / 279,579.30-419,209.04-129,742.52

Finding the Fourth Proportional to 279,579.30, 419,209.04 and 129,742.52

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Solution

The fourth proportional to 279,579.30, 419,209.04 and 129,742.52 is: 194,539.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,579.30 : 419,209.04 = 129,742.52 : x
  2. Step 2: Convert to fraction form
    279,579.30/419,209.04 = 129,742.52/x
  3. Step 3: Cross multiply
    279,579.30x = 419,209.04 × 129,742.52
  4. Step 4: Simplify right side
    279,579.30x = 54,389,237,256.38
  5. Step 5: Solve for x
    x = 54,389,237,256.38/279,579.30
  6. Step 6: Final answer
    x = 194,539.57

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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.