Home / 419,981.40-629,899.20-153,604.80

Finding the Fourth Proportional to 419,981.40, 629,899.20 and 153,604.80

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Solution

The fourth proportional to 419,981.40, 629,899.20 and 153,604.80 is: 230,380.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,981.40 : 629,899.20 = 153,604.80 : x
  2. Step 2: Convert to fraction form
    419,981.40/629,899.20 = 153,604.80/x
  3. Step 3: Cross multiply
    419,981.40x = 629,899.20 × 153,604.80
  4. Step 4: Simplify right side
    419,981.40x = 96,755,540,636.16
  5. Step 5: Solve for x
    x = 96,755,540,636.16/419,981.40
  6. Step 6: Final answer
    x = 230,380.54

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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.