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Finding the Fourth Proportional to 509,789.21, 764,634.30 and 154,806.30

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Solution

The fourth proportional to 509,789.21, 764,634.30 and 154,806.30 is: 232,194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,789.21 : 764,634.30 = 154,806.30 : x
  2. Step 2: Convert to fraction form
    509,789.21/764,634.30 = 154,806.30/x
  3. Step 3: Cross multiply
    509,789.21x = 764,634.30 × 154,806.30
  4. Step 4: Simplify right side
    509,789.21x = 118,370,206,836.09
  5. Step 5: Solve for x
    x = 118,370,206,836.09/509,789.21
  6. Step 6: Final answer
    x = 232,194.42

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1.5x scale

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.