Home / 419,795.31-629,755.20-135,392.34

Finding the Fourth Proportional to 419,795.31, 629,755.20 and 135,392.34

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Solution

The fourth proportional to 419,795.31, 629,755.20 and 135,392.34 is: 203,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,795.31 : 629,755.20 = 135,392.34 : x
  2. Step 2: Convert to fraction form
    419,795.31/629,755.20 = 135,392.34/x
  3. Step 3: Cross multiply
    419,795.31x = 629,755.20 × 135,392.34
  4. Step 4: Simplify right side
    419,795.31x = 85,264,030,155.17
  5. Step 5: Solve for x
    x = 85,264,030,155.17/419,795.31
  6. Step 6: Final answer
    x = 203,108.58

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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.