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Finding the Fourth Proportional to 629,721.54, 944,363.61 and 208,899

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Solution

The fourth proportional to 629,721.54, 944,363.61 and 208,899 is: 313,275.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,721.54 : 944,363.61 = 208,899 : x
  2. Step 2: Convert to fraction form
    629,721.54/944,363.61 = 208,899/x
  3. Step 3: Cross multiply
    629,721.54x = 944,363.61 × 208,899
  4. Step 4: Simplify right side
    629,721.54x = 197,276,613,765.39
  5. Step 5: Solve for x
    x = 197,276,613,765.39/629,721.54
  6. Step 6: Final answer
    x = 313,275.95

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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.