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Finding the Fourth Proportional to 509,636.18, 764,458.89 and 154,650.21

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Solution

The fourth proportional to 509,636.18, 764,458.89 and 154,650.21 is: 231,976.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,636.18 : 764,458.89 = 154,650.21 : x
  2. Step 2: Convert to fraction form
    509,636.18/764,458.89 = 154,650.21/x
  3. Step 3: Cross multiply
    509,636.18x = 764,458.89 × 154,650.21
  4. Step 4: Simplify right side
    509,636.18x = 118,223,729,163.24
  5. Step 5: Solve for x
    x = 118,223,729,163.24/509,636.18
  6. Step 6: Final answer
    x = 231,976.72

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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.