Home / 419,763.20-629,721.60-170,470.40

Finding the Fourth Proportional to 419,763.20, 629,721.60 and 170,470.40

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Solution

The fourth proportional to 419,763.20, 629,721.60 and 170,470.40 is: 255,736.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,763.20 : 629,721.60 = 170,470.40 : x
  2. Step 2: Convert to fraction form
    419,763.20/629,721.60 = 170,470.40/x
  3. Step 3: Cross multiply
    419,763.20x = 629,721.60 × 170,470.40
  4. Step 4: Simplify right side
    419,763.20x = 107,348,893,040.64
  5. Step 5: Solve for x
    x = 107,348,893,040.64/419,763.20
  6. Step 6: Final answer
    x = 255,736.79

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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.