Home / 414,657.20-621,986.04-115,137.78

Finding the Fourth Proportional to 414,657.20, 621,986.04 and 115,137.78

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Solution

The fourth proportional to 414,657.20, 621,986.04 and 115,137.78 is: 172,706.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,657.20 : 621,986.04 = 115,137.78 : x
  2. Step 2: Convert to fraction form
    414,657.20/621,986.04 = 115,137.78/x
  3. Step 3: Cross multiply
    414,657.20x = 621,986.04 × 115,137.78
  4. Step 4: Simplify right side
    414,657.20x = 71,614,091,253.48
  5. Step 5: Solve for x
    x = 71,614,091,253.48/414,657.20
  6. Step 6: Final answer
    x = 172,706.74

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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.