Home / 419,748.40-629,436.84-120,160.72

Finding the Fourth Proportional to 419,748.40, 629,436.84 and 120,160.72

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Solution

The fourth proportional to 419,748.40, 629,436.84 and 120,160.72 is: 180,187.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,748.40 : 629,436.84 = 120,160.72 : x
  2. Step 2: Convert to fraction form
    419,748.40/629,436.84 = 120,160.72/x
  3. Step 3: Cross multiply
    419,748.40x = 629,436.84 × 120,160.72
  4. Step 4: Simplify right side
    419,748.40x = 75,633,583,888.92
  5. Step 5: Solve for x
    x = 75,633,583,888.92/419,748.40
  6. Step 6: Final answer
    x = 180,187.90

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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.