Home / 430,928.97-645,519.84-199,793.30

Finding the Fourth Proportional to 430,928.97, 645,519.84 and 199,793.30

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Solution

The fourth proportional to 430,928.97, 645,519.84 and 199,793.30 is: 299,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,928.97 : 645,519.84 = 199,793.30 : x
  2. Step 2: Convert to fraction form
    430,928.97/645,519.84 = 199,793.30/x
  3. Step 3: Cross multiply
    430,928.97x = 645,519.84 × 199,793.30
  4. Step 4: Simplify right side
    430,928.97x = 128,970,535,821.47
  5. Step 5: Solve for x
    x = 128,970,535,821.47/430,928.97
  6. Step 6: Final answer
    x = 299,284.90

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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.