Home / 419,819.95-629,573.19-135,439.08

Finding the Fourth Proportional to 419,819.95, 629,573.19 and 135,439.08

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Solution

The fourth proportional to 419,819.95, 629,573.19 and 135,439.08 is: 203,108.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,819.95 : 629,573.19 = 135,439.08 : x
  2. Step 2: Convert to fraction form
    419,819.95/629,573.19 = 135,439.08/x
  3. Step 3: Cross multiply
    419,819.95x = 629,573.19 × 135,439.08
  4. Step 4: Simplify right side
    419,819.95x = 85,268,813,646.27
  5. Step 5: Solve for x
    x = 85,268,813,646.27/419,819.95
  6. Step 6: Final answer
    x = 203,108.06

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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.