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Finding the Fourth Proportional to 419,771.60, 629,657.40 and 230,814.80

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Solution

The fourth proportional to 419,771.60, 629,657.40 and 230,814.80 is: 346,222.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,771.60 : 629,657.40 = 230,814.80 : x
  2. Step 2: Convert to fraction form
    419,771.60/629,657.40 = 230,814.80/x
  3. Step 3: Cross multiply
    419,771.60x = 629,657.40 × 230,814.80
  4. Step 4: Simplify right side
    419,771.60x = 145,334,246,849.52
  5. Step 5: Solve for x
    x = 145,334,246,849.52/419,771.60
  6. Step 6: Final answer
    x = 346,222.20

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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.