Home / 419,901.20-629,890.20-170,531.60

Finding the Fourth Proportional to 419,901.20, 629,890.20 and 170,531.60

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Solution

The fourth proportional to 419,901.20, 629,890.20 and 170,531.60 is: 255,813.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,901.20 : 629,890.20 = 170,531.60 : x
  2. Step 2: Convert to fraction form
    419,901.20/629,890.20 = 170,531.60/x
  3. Step 3: Cross multiply
    419,901.20x = 629,890.20 × 170,531.60
  4. Step 4: Simplify right side
    419,901.20x = 107,416,183,630.32
  5. Step 5: Solve for x
    x = 107,416,183,630.32/419,901.20
  6. Step 6: Final answer
    x = 255,813.00

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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.