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Finding the Fourth Proportional to 397,630.89, 548,736.26 and 216,342.95

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Solution

The fourth proportional to 397,630.89, 548,736.26 and 216,342.95 is: 298,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,630.89 : 548,736.26 = 216,342.95 : x
  2. Step 2: Convert to fraction form
    397,630.89/548,736.26 = 216,342.95/x
  3. Step 3: Cross multiply
    397,630.89x = 548,736.26 × 216,342.95
  4. Step 4: Simplify right side
    397,630.89x = 118,715,221,260.37
  5. Step 5: Solve for x
    x = 118,715,221,260.37/397,630.89
  6. Step 6: Final answer
    x = 298,556.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.