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Finding the Fourth Proportional to 419,449.44, 629,172.72 and 170,130.72

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Solution

The fourth proportional to 419,449.44, 629,172.72 and 170,130.72 is: 255,195.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,449.44 : 629,172.72 = 170,130.72 : x
  2. Step 2: Convert to fraction form
    419,449.44/629,172.72 = 170,130.72/x
  3. Step 3: Cross multiply
    419,449.44x = 629,172.72 × 170,130.72
  4. Step 4: Simplify right side
    419,449.44x = 107,041,607,857.96
  5. Step 5: Solve for x
    x = 107,041,607,857.96/419,449.44
  6. Step 6: Final answer
    x = 255,195.50

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1.5x scale

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.