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Finding the Fourth Proportional to 636,419.43, 954,425.07 and 209,859.39

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Solution

The fourth proportional to 636,419.43, 954,425.07 and 209,859.39 is: 314,721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,419.43 : 954,425.07 = 209,859.39 : x
  2. Step 2: Convert to fraction form
    636,419.43/954,425.07 = 209,859.39/x
  3. Step 3: Cross multiply
    636,419.43x = 954,425.07 × 209,859.39
  4. Step 4: Simplify right side
    636,419.43x = 200,295,062,990.91
  5. Step 5: Solve for x
    x = 200,295,062,990.91/636,419.43
  6. Step 6: Final answer
    x = 314,721.79

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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.