Home / 423,904.20-635,853.78-108,360.60

Finding the Fourth Proportional to 423,904.20, 635,853.78 and 108,360.60

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Solution

The fourth proportional to 423,904.20, 635,853.78 and 108,360.60 is: 162,540.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,904.20 : 635,853.78 = 108,360.60 : x
  2. Step 2: Convert to fraction form
    423,904.20/635,853.78 = 108,360.60/x
  3. Step 3: Cross multiply
    423,904.20x = 635,853.78 × 108,360.60
  4. Step 4: Simplify right side
    423,904.20x = 68,901,497,113.07
  5. Step 5: Solve for x
    x = 68,901,497,113.07/423,904.20
  6. Step 6: Final answer
    x = 162,540.26

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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.