Home / 419,768.20-629,729.10-170,475.40

Finding the Fourth Proportional to 419,768.20, 629,729.10 and 170,475.40

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Solution

The fourth proportional to 419,768.20, 629,729.10 and 170,475.40 is: 255,744.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,768.20 : 629,729.10 = 170,475.40 : x
  2. Step 2: Convert to fraction form
    419,768.20/629,729.10 = 170,475.40/x
  3. Step 3: Cross multiply
    419,768.20x = 629,729.10 × 170,475.40
  4. Step 4: Simplify right side
    419,768.20x = 107,353,320,214.14
  5. Step 5: Solve for x
    x = 107,353,320,214.14/419,768.20
  6. Step 6: Final answer
    x = 255,744.29

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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.