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Finding the Fourth Proportional to 644,913.20, 966,678.60 and 245,399.60

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Solution

The fourth proportional to 644,913.20, 966,678.60 and 245,399.60 is: 367,836.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,913.20 : 966,678.60 = 245,399.60 : x
  2. Step 2: Convert to fraction form
    644,913.20/966,678.60 = 245,399.60/x
  3. Step 3: Cross multiply
    644,913.20x = 966,678.60 × 245,399.60
  4. Step 4: Simplify right side
    644,913.20x = 237,222,541,768.56
  5. Step 5: Solve for x
    x = 237,222,541,768.56/644,913.20
  6. Step 6: Final answer
    x = 367,836.39

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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.