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Finding the Fourth Proportional to 419,700.48, 629,317.40 and 170,090.88

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Solution

The fourth proportional to 419,700.48, 629,317.40 and 170,090.88 is: 255,041.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,700.48 : 629,317.40 = 170,090.88 : x
  2. Step 2: Convert to fraction form
    419,700.48/629,317.40 = 170,090.88/x
  3. Step 3: Cross multiply
    419,700.48x = 629,317.40 × 170,090.88
  4. Step 4: Simplify right side
    419,700.48x = 107,041,150,365.31
  5. Step 5: Solve for x
    x = 107,041,150,365.31/419,700.48
  6. Step 6: Final answer
    x = 255,041.76

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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.