Home / 426,819.49-640,147.08-199,052.58

Finding the Fourth Proportional to 426,819.49, 640,147.08 and 199,052.58

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Solution

The fourth proportional to 426,819.49, 640,147.08 and 199,052.58 is: 298,540.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,819.49 : 640,147.08 = 199,052.58 : x
  2. Step 2: Convert to fraction form
    426,819.49/640,147.08 = 199,052.58/x
  3. Step 3: Cross multiply
    426,819.49x = 640,147.08 × 199,052.58
  4. Step 4: Simplify right side
    426,819.49x = 127,422,927,853.47
  5. Step 5: Solve for x
    x = 127,422,927,853.47/426,819.49
  6. Step 6: Final answer
    x = 298,540.56

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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.